TK20: How Do I Cancel a Feedback Request?
If you would like to revoke a feedback request, do the following:
Go to the Feedback sub-tab of an artifact for which you have requested feedback.
Note: Only feedback requests with a status of Pending can be revoked.
Check the box to the left of the feedback request, then click the revoke button that appears underneath Feedback Requests.
In order for the revoke to be complete, you must save the artifact.