Remove the creation and use of the Kubectl image to apply configuration (#198)

Using kubectl to manage configuration is not a sustainable solution and
not something that we want to promote users to do. This removes the
creation of the image and use of the image in the Helm charts.

.github/workflows/kubectl-docker.yml

@@ -1,62 +0,0 @@
-name: Docker
-
-on:
-  push:
-    paths:
-      - 'Dockerfile.kubectl'
-    tags:
-      - "v*"
-    branches:
-      - main
-
-jobs:
-  kubectl-docker:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
-      # This is used to complete the identity challenge
-      # with sigstore/fulcio when running outside of PRs.
-      id-token: write
-
-    steps:
-      - name: Docker meta
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          # list of Docker images to use as base name for tags
-          images: |
-            netbirdio/kubectl
-          # generate Docker tags based on the following events/attributes
-          tags: |
-            type=ref,event=pr
-            type=ref,event=branch
-            type=semver,pattern={{version}}
-
-      - name: Login to Docker Hub
-        if: github.repository == github.event.pull_request.head.repo.full_name || !github.head_ref
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKER_USER }}
-          password: ${{ secrets.DOCKER_TOKEN }}
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      - name: Build and push
-        uses: docker/build-push-action@v6
-        with:
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          file: "Dockerfile.kubectl"
-          labels: |
-            "org.opencontainers.image.created={{.Date}}"
-            "org.opencontainers.image.title={{.ProjectName}}"
-            "org.opencontainers.image.version={{.Version}}"
-            "org.opencontainers.image.revision={{.FullCommit}}"
-            "org.opencontainers.image.version={{.Version}}"
-            "maintainer=dev@netbird.io"