Merge pull request #1321 from wking/drop-retest-not-required-docs-only

cluster/ci/config/prow/labels: Drop retest-not-required-docs-only

Author: openshift-merge-robot

cluster/ci/config/prow/labels.yaml

@@ -160,17 +160,6 @@ labels:
     name: queue/multiple-rebases
     target: prs
     addedBy: humans
-  - color: eb6420
-    description: Indicates that a PR doesn't need to be retested prior to merge. At present only submit-queue consumes this label. Unclear whether we're going to modify tide to respect this or not ([kubernetes/test-infra#5334](https://github.com/kubernetes/test-infra/issues/5334))
-    name: retest-not-required
-    target: prs
-    addedBy: humans
-  - color: fbca04
-    description: Indicates that a PR doesn't need to be retested prior to merge because it only changes docs. At present only submit-queue consumes this label. Unclear whether we're going to modify tide to respect this or not ([kubernetes/test-infra#7195](https://github.com/kubernetes/test-infra/issues/7195))
-    name: retest-not-required-docs-only
-    target: prs
-    prowPlugin: docs-no-retest
-    addedBy: prow
   - color: ee9900
     description: Denotes a PR that changes 100-499 lines, ignoring generated files.
     name: size/L