
This reverts commit 4a28d1f80083fb7a46180c102e65c1e5a6f977d6. This commit was originally made to fix a bug that caused TokenCredentialRequest to become slow when the server was idle for an extended period of time. This was to address a Kubernetes issue that was fixed in 1.19.5 and onward. We are now running with Kubernetes 1.20, so we should be able to pick up this fix.