removed Swiftmailer dep as it is already included in the bridge

Author: fabpot

composer.json

@@ -17,7 +17,6 @@
     ],
     "require": {
         "php": ">=5.3.2",
-        "swiftmailer/swiftmailer": ">=4.2.0,<4.4-dev",
         "symfony/swiftmailer-bridge": ">=2.1.0,<2.3-dev"
     },
     "require-dev": {
@@ -32,7 +31,7 @@
     "target-dir": "Symfony/Bundle/SwiftmailerBundle",
     "extra": {
         "branch-alias": {
-            "dev-master": "2.1-dev"
+            "dev-master": "2.2-dev"
         }
     },
     "minimum-stability": "dev"