Remove prop-types dev dependency.

Author: cknitt

package.json

@@ -26,7 +26,6 @@
     "bs-react-intl-extractor-bin": "0.7.0",
     "bsb-js": "^1.1.7",
     "parcel-bundler": "1.12.3",
-    "prop-types": "15.7.2",
     "react": "16.8.6",
     "react-dom": "16.8.6",
     "react-intl": "3.1.6",

yarn.lock

@@ -4162,7 +4162,7 @@ process@^0.11.10:
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
   integrity sha1-czIwDoQBYb2j5podHZGn1LwW8YI=
 
-prop-types@15.7.2, prop-types@^15.6.2:
+prop-types@^15.6.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.7.2.tgz#52c41e75b8c87e72b9d9360e0206b99dcbffa6c5"
   integrity sha512-8QQikdH7//R2vurIJSutZ1smHYTcLpRWEOlHnzcWHmBYrOGUysKwSsrC89BCiFj3CbrfJ/nXFdJepOVrY1GCHQ==