apimachinery/clock: Delete the clock package
apimachinery/clock: Delete the clock package

Delete the clock package after having a soak period
of 1 release cycle (1.24). The pacakge that should
be used now is the k8s.io/utils/clock package.

Signed-off-by: Madhav Jivrajani <madhav.jiv@gmail.com>

Kubernetes-commit: 43f0918db1111209e75dd68dd7a9f1e52036554b

kubernetes/apimachinery