github actions: antsibull-changelog removed obsolete branches

Author: Rendanic

.github/workflows/changelog-lint.yml

@@ -3,9 +3,7 @@ name: Test antsibull-changelog lint
 on:
   pull_request:
     branches:
-      - oc
       - master
-      - collection
   push:
     branches:
       - 'pr*'

changelogs/fragments/270-ansible-lint.yml

@@ -1,6 +1,7 @@
 ---
 minor_changes:
   - "ansible-lint: linting and github actions for playbooks and inventory (#270)"
+  - "github actions: antsibull-changelog removed obsolete branches (#270)"
 bugfixes:
   - "requirements.yml: removed ansible-oracle due to loop in ansible-lint (#270)"
   - "github actions: ansible-lint: removed args due to deprecation warning (#270)"