Delete build_only.yml

.github/workflows/build_only.yml

@@ -1,19 +0,0 @@
-name: Build only image
-on:
-    push:
-        branches:
-            - master
-
-jobs:
-    build:
-        runs-on: ubuntu-latest
-        name: Build image job
-        steps:
-            - name: Checkout master
-              uses: actions/checkout@master
-            - name: Build image
-              uses: ilteoood/docker_buildx@master
-              with:
-                tag: latest,0.3.0
-                platform: linux/amd64,linux/arm64,linux/ppc64le,linux/s390x,linux/arm/v7
-                imageName: ${{ secrets.DOCKER_HUB_USER }}/webssh2