remove build n push single arch case for ppc64le as it is not required

Author: Sapana-Khemkar

.github/workflows/build-test-publish.yml

@@ -170,15 +170,6 @@ jobs:
         tags: |
           type=semver,pattern={{version}},suffix=-ppc64le,latest=false
           type=sha,suffix=-ppc64le,latest=false
-    - name: Build and push single-arch ppc64le image
-      #if: startsWith(github.ref, 'refs/tags/v')
-      uses: docker/build-push-action@v3
-      with:
-        context: .
-        platforms: linux/ppc64le
-        push: ${{ github.event_name != 'pull_request' }}
-        tags: ${{ steps.single-arch-meta-ppc64le.outputs.tags }}
-        labels: ${{ steps.single-arch-meta-ppc64le.outputs.labels }}   
     - name: Build manifest
       if: github.event_name != 'pull_request'
       env: