docs: code review cleanup

Co-authored-by: Igor Furgała <74370735+exploIF@users.noreply.github.com>

Author: hejsztynx

docs/docs/guides/user-and-channel-mentions.mdx

@@ -86,11 +86,6 @@ list, then tap a suggestion.
 
 <InteractiveExample src={MentionOnlyEditorSrc} component={MentionOnlyEditor} />
 
-:::info
-
-If you want to see the whole code used to build this example, you can find it by switching the tab from `Preview` to `Code`.
-
-:::
 
 :::tip