Remove 3.0.x alias from composer.json before tagging 3.0.0

composer.json

@@ -24,10 +24,5 @@
     "require-dev": {
         "mockery/mockery": "^0.9.4",
         "phpunit/phpunit": "^4.4"
-    },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "3.0.x-dev"
-        }
     }
 }

composer.lock

@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "5bd1e5e2446fe58d15c5ad5418aeedae",
-    "content-hash": "203e059d6c5443d8c4c336dd25772904",
+    "hash": "bb0e430e32d40dd98ae89d0744edf864",
+    "content-hash": "a97035b9599fe2a0c23169d91b7b1936",
     "packages": [
         {
             "name": "phpdocumentor/reflection-common",
@@ -17,7 +17,7 @@
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/8dfc66d8a72f6741ed9f5a39227f99f78ae8d9a5",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/144c307535e82c8fdcaacbcfc1d6d8eeb896687c",
                 "reference": "9969bd1c9661a73fdab104df7dbf132639d5c4d8",
                 "shasum": ""
             },