Remove trending hashtags (#7711)

* Delete trends_controller.rb

* Update routes.rb

* Update trending_tags.rb

* Update index.js

* Update index.js

* Update search_results.js

* Update async-components.js

* Update index.js

* Delete trends.js

* Delete trends.js

* Delete trends_container.js

* Delete trends.js

* Update search_results.js

* Update search_results_container.js

app/javascript/mastodon/reducers/index.js

@@ -26,7 +26,6 @@ import height_cache from './height_cache';
 import custom_emojis from './custom_emojis';
 import lists from './lists';
 import listEditor from './list_editor';
-import trends from './trends';
 
 const reducers = {
   dropdown_menu,
@@ -56,7 +55,6 @@ const reducers = {
   custom_emojis,
   lists,
   listEditor,
-  trends,
 };
 
 export default combineReducers(reducers);