feat(app): remove unused app task

BREAKING CHANGE: the 'app' task has been removed

Author: tlancina

lib/ionic/app.js

@@ -283,18 +283,6 @@ var TASKS = [
     name: 'address',
     module: './ionic/serve'
   },
-  {
-    title: 'app',
-    name: 'app',
-    // summary: 'Deploy a new Ionic app version or list versions',
-    // options: {
-    //   '--versions|-v': 'List recently uploaded versions of this app',
-    //   '--deploy|-d': 'Upload the current working copy and mark it as deployed',
-    //   '--note|-n': 'Add a note to a deploy',
-    //   '--uuid|-u': 'Mark an already uploaded version as deployed'
-    // },
-    module: './ionic/app'
-  },
   {
     title: 'io',
     name: 'io',