Fix replying not automatically switching to compose form on mobile

app/javascript/flavours/glitch/features/compose/containers/compose_form_container.js

@@ -9,10 +9,8 @@ import {
   clearComposeSuggestions,
   fetchComposeSuggestions,
   insertEmojiCompose,
-  mountCompose,
   selectComposeSuggestion,
   submitCompose,
-  unmountCompose,
   uploadCompose,
 } from 'flavours/glitch/actions/compose';
 import {
@@ -114,14 +112,6 @@ const mapDispatchToProps = (dispatch, { intl }) => ({
     dispatch(changeComposeVisibility(value));
   },
 
-  onMount() {
-    dispatch(mountCompose());
-  },
-
-  onUnmount() {
-    dispatch(unmountCompose());
-  },
-
   onMediaDescriptionConfirm(routerHistory) {
     dispatch(openModal('CONFIRM', {
       message: intl.formatMessage(messages.missingDescriptionMessage),