Fix minor code quality issues (#16502)

app/javascript/mastodon/features/ui/components/video_modal.js

@@ -21,7 +21,7 @@ export default class VideoModal extends ImmutablePureComponent {
   };
 
   componentDidMount () {
-    const { media, onChangeBackgroundColor, onClose } = this.props;
+    const { media, onChangeBackgroundColor } = this.props;
 
     const backgroundColor = getAverageFromBlurhash(media.get('blurhash'));
 

app/javascript/mastodon/reducers/modal.js

@@ -5,11 +5,11 @@ import { Stack as ImmutableStack, Map as ImmutableMap } from 'immutable';
 export default function modal(state = ImmutableStack(), action) {
   switch(action.type) {
   case MODAL_OPEN:
-        return state.unshift(ImmutableMap({ modalType: action.modalType, modalProps: action.modalProps }));
+    return state.unshift(ImmutableMap({ modalType: action.modalType, modalProps: action.modalProps }));
   case MODAL_CLOSE:
     return (action.modalType === undefined || action.modalType === state.getIn([0, 'modalType'])) ? state.shift() : state;
   case TIMELINE_DELETE:
-        return state.filterNot((modal) => modal.get('modalProps').statusId === action.id);
+    return state.filterNot((modal) => modal.get('modalProps').statusId === action.id);
   default:
     return state;
   }