Remove unused GitHub workflows for mirroring and Docker image building

.github/workflows/mirror.yml

@@ -1,17 +0,0 @@
-name: Mirroring
-
-on: [push, delete]
-
-jobs:
-  to_gitlab:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-      - uses: pixta-dev/repository-mirroring-action@v1
-        with:
-          target_repo_url:
-            git@gitlab.com:rogs/bitwarden-to-keepass.git
-          ssh_private_key:
-            ${{ secrets.GITLAB_SSH_PRIVATE_KEY }}

.github/workflows/publish.yml

@@ -1,25 +0,0 @@
-name: Build and Push Docker Image
-
-on:
-  push:
-    branches:
-      - master
-
-jobs:
-  build-and-push:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Check out the repository
-      uses: actions/checkout@v4
-
-    - name: Log in to Docker Hub
-      uses: docker/login-action@v3
-      with:
-        username: ${{ secrets.DOCKER_USERNAME }}
-        password: ${{ secrets.DOCKER_PASSWORD }}
-
-    - name: Build and push Docker image
-      uses: docker/build-push-action@v5
-      with:
-        push: true
-        tags: rogsme/bitwarden-to-keepass:latest