Remove prototype code from CreateGroupDialog

The prototype code paths prevent users from ending up here, so we don't need custom code.

src/components/views/dialogs/CreateGroupDialog.js

@@ -83,25 +83,11 @@ export default createReactClass({
             localpart: this.state.groupId,
             profile: profile,
         }).then((result) => {
-            if (result.room_id) {
-                dis.dispatch({
-                    action: 'view_room',
-                    room_id: result.room_id,
-                });
-
-                // Ensure the tag gets selected now that we've created it
-                dis.dispatch({action: 'deselect_tags'}, true);
-                dis.dispatch({
-                    action: 'select_tag',
-                    tag: result.group_id,
-                });
-            } else {
             dis.dispatch({
                 action: 'view_group',
                 group_id: result.group_id,
                 group_is_new: true,
             });
-            }
             this.props.onFinished(true);
         }).catch((e) => {
             this.setState({createError: e});