chore: retire legacy dev workflow

**Motivations :**
- align relay build with current ci expectations on dev3

**Modifications :**
- remove obsolete dev github workflow

**Page affectées :**
- .github/workflows/dev.yml

.github/workflows/dev.yml

@@ -1,44 +0,0 @@
-name: Build and Push to Registry
-
-on:
-  push:
-    branches: [ dev ]
-
-env:
-  REGISTRY: git.4nkweb.com
-  IMAGE_NAME: 4nk/sdk_relay
-
-jobs:
-  build-and-push:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Set up SSH agent
-        uses: webfactory/ssh-agent@v0.9.1
-        with:
-          ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Login to Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ secrets.USER }}
-          password: ${{ secrets.TOKEN }}
-
-      - name: Build and push
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          push: true
-          ssh: default
-          build-args: |
-            CONF=${{ secrets.CONF }}
-          tags: |
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:dev
-            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ gitea.sha }}