Removed Elasticsearch and Opensearch channel index schedma check (#30102)

server/i18n/en.json

@@ -4610,10 +4610,6 @@
     "id": "app.channel.delete.app_error",
     "translation": "Unable to delete the channel."
   },
-  {
-    "id": "app.channel.elasticsearch_channel_index.notify_admin.message",
-    "translation": "Your search channel index schema is out of date. We recommend regenerating your channel index.\nClick the `Rebuild Channels Index` button in the [Elasticsearch page via the System Console]({{.ElasticsearchSection}}) to fix this issue.\nSee the Mattermost changelog for more information."
-  },
   {
     "id": "app.channel.get.existing.app_error",
     "translation": "Unable to find the existing channel {{.channel_id}}."