Fix release_drafter

Author: edouard

.github/workflows/release-drafter.yml

@@ -5,10 +5,6 @@ on:
     # branches to consider in the event; optional, defaults to all
     branches:
       - master
-  # pull_request event is required only for autolabeler
-  pull_request:
-    # Only following types are handled by the action, but one can default to all as well
-    types: [opened, reopened, synchronize]
 
 jobs:
   update_release_draft: