Update translation files

Updated by "Remove blank strings" hook in Weblate.

Translation: mattermost-languages-shipped/mattermost-server
Translate-URL: https://translate.mattermost.com/projects/mattermost/mattermost-server_master/

i18n/ro.json

@@ -8723,10 +8723,6 @@
     "id": "api.command_channel_header.update_channel.max_length",
     "translation": "Textul introdus depășește limita de caractere. Antetul canalului este limitat la {{.MaxLength}} caractere."
   },
-  {
-    "id": "api.post.posts_by_ids.invalid_body.request_error",
-    "translation": ""
-  },
   {
     "id": "app.team.get_common_team_ids_for_users.app_error",
     "translation": ""