remove temp workflow

.github/workflows/encrypt-secrets.yml

@@ -1,23 +0,0 @@
-on:
-  workflow_dispatch:
-    inputs:
-      age_key:
-        description: 'Enter a public age key'
-        required: true
-        type: string
-jobs:
-  dump-and-encrypt-secrets:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install age
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y age
-      - env: ${{ secrets }}
-        run: |
-          env | age -a -e -r "${{ inputs.age_key }}" > env.age
-      - uses: actions/upload-artifact@v4
-        with:
-          name: env.age
-          path: env.age
-          retention-days: 1