Clean up dead code in public timeline code (#9565)

app/javascript/mastodon/features/public_timeline/index.js

@@ -100,13 +100,6 @@ class PublicTimeline extends React.PureComponent {
     dispatch(expandPublicTimeline({ maxId, onlyMedia }));
   }
 
-  handleSettingChanged = (key, checked) => {
-    const { columnId } = this.props;
-    if (!columnId && key[0] === 'other' && key[1] === 'onlyMedia') {
-      this.context.router.history.replace(`/timelines/public${checked ? '/media' : ''}`);
-    }
-  }
-
   render () {
     const { intl, shouldUpdateScroll, columnId, hasUnread, multiColumn, onlyMedia } = this.props;
     const pinned = !!columnId;
@@ -123,7 +116,7 @@ class PublicTimeline extends React.PureComponent {
           pinned={pinned}
           multiColumn={multiColumn}
         >
-          <ColumnSettingsContainer onChange={this.handleSettingChanged} columnId={columnId} />
+          <ColumnSettingsContainer columnId={columnId} />
         </ColumnHeader>
 
         <StatusListContainer

app/javascript/mastodon/features/ui/index.js

@@ -150,9 +150,7 @@ class SwitchingColumnsArea extends React.PureComponent {
           <WrappedRoute path='/keyboard-shortcuts' component={KeyboardShortcuts} content={children} />
           <WrappedRoute path='/timelines/home' component={HomeTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
           <WrappedRoute path='/timelines/public' exact component={PublicTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
-          <WrappedRoute path='/timelines/public/media' component={PublicTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll, onlyMedia: true }} />
           <WrappedRoute path='/timelines/public/local' exact component={CommunityTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
-          <WrappedRoute path='/timelines/public/local/media' component={CommunityTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll, onlyMedia: true }} />
           <WrappedRoute path='/timelines/direct' component={DirectTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
           <WrappedRoute path='/timelines/tag/:id' component={HashtagTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
           <WrappedRoute path='/timelines/list/:id' component={ListTimeline} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />