kubeadm: remove misplaced error during image pull

During preflight when an image is pulled, if the sandbox image
check returns an error, the same error later blocks the actual
image pull.

Author: neolit123

cmd/kubeadm/app/preflight/checks.go

@@ -863,9 +863,6 @@ func (ipc ImagePullCheck) Check() (warnings, errorList []error) {
 				klog.V(1).Infof("image exists: %s", image)
 				continue
 			}
-			if err != nil {
-				errorList = append(errorList, errors.Wrapf(err, "failed to check if image %s exists", image))
-			}
 			fallthrough // Proceed with pulling the image if it does not exist
 		case v1.PullAlways:
 			klog.V(1).Infof("pulling: %s", image)