[tiny][chore] Remove actionlint label for windows-11-arm (#14022)

Latest version of `actionlint`, see [release
notes](https://github.com/rhysd/actionlint/releases/tag/v1.7.8),
natively recognizes `windows-11-arm` runners.

Follow-up to
#13772 (comment)

Author: pjanotti

.github/actionlint.yaml

@@ -1,8 +1,5 @@
 self-hosted-runner:
-  labels:
-    # Actionlint doesn't include yet windows-11-arm as a known runner, adding it
-    # manually, see https://github.com/rhysd/actionlint/issues/533.
-    - windows-11-arm
+  labels: []
 
 config-variables: null