Fix cleanup of google services within their library

Cleanup was originally made only post update (for developer
who updated the packages). If anyone run composer install
afterwards, they'd get full 200+ services without a cleanup
which was not intended.

remp/crm#1917

composer.json

@@ -16,15 +16,5 @@
       "Crm\\UsersModule\\": "src/"
     },
     "classmap": ["src/"]
-  },
-  "scripts": {
-    "post-update-cmd": [
-      "Google\\Task\\Composer::cleanup"
-    ]
-  },
-  "extra": {
-    "google/apiclient-services": [
-      "Oauth2"
-    ]
   }
 }