Remove msisov from ozone watchlist.

Watchlist mixes with the review requests I get. Instead, I better
subscribe to ozone-reviews group.

Change-Id: I8e70941f8f7e8afb5384e153a42251f5b25520e5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1913245Reviewed-by: Maksim Sisov <msisov@igalia.com>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Auto-Submit: Maksim Sisov <msisov@igalia.com>
Commit-Queue: Maksim Sisov <msisov@igalia.com>
Cr-Commit-Position: refs/heads/master@{#715201}

WATCHLISTS

@@ -2516,7 +2516,6 @@
     'origin_trials': ['chasej+watch@chromium.org',
                       'iclelland+watch@chromium.org'],
     'ozone': ['kalyan.kondapally@intel.com',
-              'msisov@igalia.com',
               'ozone-reviews@chromium.org'],
     'ozone_scenic': ['dworsham@google.com',
                      'rjkroege@chromium.org',