Composer: drop branch alias for develop

Author: f3l1x

composer.json

@@ -26,8 +26,7 @@
   },
   "extra": {
     "branch-alias": {
-      "dev-master": "0.10.x-dev",
-      "dev-develop": "1.0.x-dev"
+      "dev-master": "0.10.x-dev"
     }
   }
 }