Removed unused group prop in StatusList

• Removed:
- unused group prop in StatusList

app/javascript/gabsocial/components/status_list.js

@@ -96,7 +96,6 @@ class StatusList extends ImmutablePureComponent {
     emptyMessage: PropTypes.string,
     timelineId: PropTypes.string,
     queuedItemSize: PropTypes.number,
-    group: ImmutablePropTypes.map,
     onDequeueTimeline: PropTypes.func.isRequired,
     onScrollToTop: PropTypes.func.isRequired,
     onScroll: PropTypes.func.isRequired,
@@ -222,7 +221,6 @@ class StatusList extends ImmutablePureComponent {
       totalQueuedItemsCount,
       isLoading,
       isPartial,
-      group,
       promotedStatuses,
       scrollKey,
       hasMore,