removing the arm build as it takes 27mins

there is no arm support for the cloud-hypervisor driver in libvirt anyways

Author: mchristianl

.github/workflows/container-registry-ghcr.yaml

@@ -53,6 +53,6 @@ jobs:
         with:
           context: .
           labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}