Remove redundant translation

i18n/en.json

@@ -1917,10 +1917,6 @@
     "id": "api.insights.feature_disabled",
     "translation": "Insights is behind a feature flag which is not enabled."
   },
-  {
-    "id": "api.insights.license_error",
-    "translation": "Your license doesn't support Insights feature."
-  },
   {
     "id": "api.invalid_channel",
     "translation": "Channel listed in the request doesn't belong to the user"