remove some unused i18n strings

`shared_intro_4_html` is used now instead of `food`, `want_to_coach`
isn't referenced from anywhere.

Author: mikej

config/locales/de.yml

@@ -202,7 +202,6 @@ de:
         q: "Ich werde pendeln. Können Sie mir bei meinen Reisekosten helfen?"
         a: "Wir werden einige Reisestipendien anbieten. Bitte stellen dich sicher, dass du den Fragebogen ausfüllst, nachdem du dich angemeldet hast und wir werden uns mit dir in Verbindung setzen."
   coaches:
-    want_to_coach: "Möchtest Du in unseren Workshops coachen?"
     read_before: "Wenn Du unsere Workshops noch nicht besucht hast, lies bitte unseren"
     code_of_conduct: "Verhaltenskodex"
     policy: "da wir eine Nulltoleranzpolitik haben und von allen ein entsprechendes Verhalten erwarten. Das solltest Du lesen: Unser"

config/locales/en.yml

@@ -302,13 +302,11 @@ en:
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary:

config/locales/en_AU.yml

@@ -193,13 +193,11 @@ en-AU:
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary:

config/locales/en_GB.yml

@@ -193,13 +193,11 @@ en-GB:
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary:

config/locales/en_US.yml

@@ -191,13 +191,11 @@ en-US:
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary:

config/locales/es.yml

@@ -191,13 +191,11 @@ es:
         q: "Estaré viajando. ¿Me pueden ayudar con mis gastos de viaje?"
         a: "Vamos a ofrecer algunas becas de viaje. Solo asegúrate de completar el cuestionario después de que RSVP y nos pondremos en contacto."
   coaches:
-    want_to_coach: "¿Quieres formarte en nuestros talleres?"
     read_before: "Si no ha asistido a nuestros talleres antes, asegúrate de leer nuestro"
     code_of_conduct: "código de conducta"
     policy: "Como tenemos una política de tolerancia cero y esperamos que todos se comporten de manera adecuada. También deberías pasar por nuestro"
     guide: "guía para entrenadores"
     unable_attend: "En caso de que no pueda asistir después de su RSVP, asegúrese de regresar y actualizar su asistencia a medida que confíe en los entrenadores que aparecen para que nuestros talleres se ejecuten sin problemas."
-    food: "También habrá comida en el taller. Siempre nos esforzamos en tener disponibles opciones vegetarianas, veganas y sin gluten. Si tiene otros requisitos dietéticos, envíenos un correo electrónico a"
   code_of_conduct:
     title: "Código de Conducta"
     summary:

config/locales/fi.yml

@@ -193,13 +193,11 @@ fi:
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary:

config/locales/fr.yml

@@ -192,7 +192,6 @@ fr:
         q: "Je voyage de loin. Pouvez-vous m'aider avec mes frais de déplacements?"
         a: "Nous offrons des bourses de voyage. Vous devez vous assurer de remplir le questionnaire après vous être enregistrer et nous vous contacterons."
   coaches:
-    want_to_coach: "Voulez vous enseigner à nos ateliers?"
     read_before: "Si vous n'êtes jamais venu a nos ateliers, merci de lire notre"
     code_of_conduct: "code de conduite"
     policy: "vu que nous attendons que chacun se comporte correctement. Vous devriez aussi lire notre"

config/locales/no.yml

@@ -193,13 +193,11 @@
         q: "I will be commuting. Can you help with my travel expenses?"
         a: "We will be offering some travel grants. Just make sure you fill in the questionnaire after you RSVP and we will get in touch."
   coaches:
-    want_to_coach: "Do you want to coach at our workshops?"
     read_before: "If you have not attended our workshops before, make sure you read our"
     code_of_conduct: "code of conduct"
     policy: "as we have a zero tolerance policy and expect everyone to behave appropriately. You should also  go through our"
     guide: "coaching guide"
     unable_attend: "In case you are unable to attend after you RSVP, please make sure you come back and update your attendance as we rely on coaches showing up in order for our workshops to run smoothly."
-    food: "PS: There will also be food at the workshop. We always make an effort to have vegetarian, vegan and gluten-free options available. If you have any other dietary requirements, send us email at"
   code_of_conduct:
     title: "Code of conduct"
     summary: