chore: remove obsolete catalogus pack-trigger proposal

.gitea/workflows/_catalogus-trigger-proposal.yaml

@@ -1,21 +0,0 @@
-name: Trigger Site Pack
-on:
-  push:
-    branches:
-      - main
-jobs:
-  notify:
-    runs-on: shell
-    steps:
-      - name: Dispatch pack build to EpicNext-CMS
-        run: |
-          set -e
-          API="${{ gitea.api_url }}"
-          TOKEN="${{ secrets.GITEA_TOKEN }}"
-          # Target repo: remco/EpicNext-Cms (the CMS repo that owns the pack workflow)
-          curl -s -o /dev/null -X POST \
-            "${API}/repos/remco/EpicNext-Cms/actions/workflow_dispatch" \
-            -H "Authorization: token ${TOKEN}" \
-            -H "Content-Type: application/json" \
-            -d '{"ref":"main","event_type":"build-pack"}'
-          echo "Dispatched pack build to EpicNext-CMS"