refactor: delete manual interfaces for changelogs (eclipse-edc#1728)

* cleanup: delete manual interfaces for changelogs

.github/PULL_REQUEST_TEMPLATE.md

@@ -22,6 +22,5 @@ Closes # <-- _insert Issue number if one exists_
 - [ ] added/updated copyright headers?
 - [ ] documented public classes/methods?
 - [ ] added/updated relevant documentation?
-- [ ] added relevant details to the changelog? (_skip with label `no-changelog`_)
-- [ ] assigned appropriate label? (_mandatory_)
+- [ ] assigned appropriate label? (exclude from changelog with label `no-changelog`)
 - [ ] formatted title correctly? (_take a look at the [CONTRIBUTING](https://github.com/eclipse-dataspaceconnector/DataSpaceConnector/blob/main/CONTRIBUTING.md#submit-a-pull-request) and [styleguide](https://github.com/eclipse-dataspaceconnector/DataSpaceConnector/blob/main/styleguide.md) for details_)

.github/workflows/scan-pull-request.yaml

@@ -10,18 +10,6 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  check-for-changelog-modifications:
-    runs-on: ubuntu-latest
-    continue-on-error: true
-    steps:
-      - uses: actions/checkout@v3
-      - name: Check for new entries
-        uses: brettcannon/check-for-changed-files@v1
-        with:
-          file-pattern: 'CHANGELOG.md'
-          skip-label: 'no-changelog'
-          failure-message: 'Missing changes in CHANGELOG.md. Please add relevant information if needed.'
-
   check-pull-request-title:
     runs-on: ubuntu-latest
     continue-on-error: false