Removed unused hashtag redux

• Removed:
- unused hashtag redux

app/javascript/gabsocial/reducers/index.js

@@ -12,7 +12,6 @@ import group_categories from './group_categories'
 import group_editor from './group_editor'
 import group_lists from './group_lists'
 import group_relationships from './group_relationships'
-import hashtags from './hashtags'
 import height_cache from './height_cache'
 import links from './links.js'
 import lists from './lists'
@@ -57,7 +56,6 @@ const reducers = {
   group_editor,
   group_lists,
   group_relationships,
-  hashtags,
   height_cache,
   links,
   lists,