Revert "Update push_events_to_discord.yml"

This reverts commit d064f20a0468ee1819dbb3a05ce86c466adaafa8.

.github/workflows/push_events_to_discord.yml

@@ -4,7 +4,6 @@ on:
   issues:
     types:
       - opened
-      - labeled
   issue_comment:
     types:
       - created