Automatic update from web-platform-testsRemove reviewers who have not joined the web-platform-tests org (#11888)
Part of https://github.com/web-platform-tests/wpt/issues/11293.
Reminder also in https://github.com/web-platform-tests/wpt/issues/11568.
This does not fully resolve#11293, as a few non-responders where
there would be no remaining reviewers are left, and one known to be
out-of-office. These will be handled separately to finish this.
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wpt-commits: 8fea122cf1ed5b392c86aae5e445e7553ad83deb
wpt-pr: 11888