Should always delete the must-gather pod when run the must-gather

Description of problem:
After run the `oc adm must-gather` with run-namespace , will leave the pod alone. Should always remove it .

Oc
h/h

Version :
oc version --client
Client Version: 4.13.0-0.nightly-2022-12-18-222329

How Reproducible:
Always

Steps to reproduce:
Run the command :
`oc adm must-gather --run-namespace='openshift-multus'`

Actual result:
When the command completed , the pod will leave there .
oc get pod -A |grep must-gather
openshift-multus must-gather-pcb6g 1/2 NotReady 0 30m

Expeted result:
Should always delete the must-gather pod when job completed.