Remove unnecessary workflows

.github/workflows/purge-old-workflow-runs.yml

@@ -1,28 +0,0 @@
-name: Purge old workflow runs
-on:
-  workflow_dispatch:
-    inputs:
-      days:
-        description: 'Purge runs older than days'
-        required: true
-        default: 30
-      minimum_runs:
-        description: 'The minimum runs to keep for each workflow.'
-        required: true
-        default: 6
-      delete_workflow_pattern:
-        description: 'The name of the workflow. if not set then it will target all workflows.'
-        required: false
-
-jobs:
-  del_runs:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Purge workflow runs
-        uses: Mattraks/delete-workflow-runs@v2
-        with:
-          token: ${{ github.token }}
-          repository: ${{ github.repository }}
-          retain_days: ${{ github.event.inputs.days }}
-          keep_minimum_runs: ${{ github.event.inputs.minimum_runs }}
-          delete_workflow_pattern: ${{ github.event.inputs.delete_workflow_pattern }}

.github/workflows/setup-gradle.yml

@@ -1,20 +0,0 @@
-name: Test setup-gradle
-
-on:
-  workflow_dispatch:
-  push:
-
-env:
-  GRADLE_BUILD_ACTION_CACHE_DEBUG_ENABLED: true
-
-jobs:
-  test-setup-gradle:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout sources
-      uses: actions/checkout@v4
-    - name: Setup Gradle
-      uses: ./setup-gradle
-    - name: Build groovy-dsl project
-      working-directory: .github/workflow-samples/groovy-dsl
-      run: ./gradlew assemble