remove doctrine1 dependency

symfony 1 has always worked fine without Doctrine (e.g. with Propel, or even without any ORM).
Also, without any stable tag in lexpress/doctrine1, it's impossible to install without lowering minimum-stability to "dev".

Author: garak

composer.json

@@ -3,8 +3,7 @@
     "description": "Fork of symfony 1.4 with dic, form enhancements, latest swiftmailer and better performance",
     "license": "MIT",
     "require": {
-        "swiftmailer/swiftmailer": ">=4.2.2,<5.1.0-dev",
-        "lexpress/doctrine1": "*"
+        "swiftmailer/swiftmailer": ">=4.2.2,<5.1.0-dev"
     },
     "type": "library",
     "autoload": {