chore: remove build `dev` image

.github/workflows/build-and-push-dev-image.yml

-name: build-and-push-dev-image
-
-on:
-  push:
-    branches:
-      - "main"
-
-jobs:
-  build-and-push-dev-image:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-
-      - name: Login to Docker Hub
-        uses: docker/login-action@v2
-        with:
-          username: neosmemo
-          password: ${{ secrets.DOCKER_NEOSMEMO_TOKEN }}
-
-      - name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@v2
-        with:
-          install: true
-
-      - name: Build and Push
-        id: docker_build
-        uses: docker/build-push-action@v3
-        with:
-          context: ./
-          file: ./Dockerfile
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: neosmemo/memos:dev