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

config/routes.rb

@@ -254,7 +254,6 @@ Rails.application.routes.draw do
       resources :mutes,      only: [:index]
       resources :favourites, only: [:index]
       resources :reports,    only: [:index, :create]
-      resources :trends,     only: [:index]
 
       namespace :apps do
         get :verify_credentials, to: 'credentials#show'