[Browse] Remove unused container

Remove unused container definition for split pane; this
turned out not to be a suitable quick-fix approach to
WTD-747 (implementation of this behavior directly from
the browse template turned out to be more convenient.)

platform/commonUI/general/bundle.json

@@ -112,10 +112,6 @@
                 "key": "accordion",
                 "templateUrl": "templates/containers/accordion.html",
                 "attributes": [ "title" ]
-            },
-            {
-                "key": "splitter",
-                "templateUrl": "templates/containers/split-pane.html"
             }
         ],
         "representations": [