Description of problem:

case OCP-66736 if we check for all pods get ready, sometimes will meet error "Some Pods are not ready in NS openshift-monitoring!" if the cluster is overload, code is

exutil.AssertAllPodsToBeReady(oc, "openshift-monitoring")

this PR remove the check and focus on the needed check

Version-Release number of selected component (if applicable):

4.21

How reproducible:

frequently

Steps to Reproduce:

1. see the descriptions

Actual results:

case OCP-66736 failed

Expected results:

should pass

Additional info: