Remove falken from WATCHLISTS.

Optimizing email.

Change-Id: I7b32bf2ae2916d616428e95185445d6d3736c4d0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1923209
Auto-Submit: Matt Falkenhagen <falken@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#716400}

WATCHLISTS

@@ -2179,8 +2179,7 @@
     'blink_script': ['kouhei+script@chromium.org',
                      'hiroshige+script@chromium.org'],
     'blink_scroll': ['bokan@chromium.org'],
-    'blink_service_worker': ['falken+watch@chromium.org',
-                             'horo+watch@chromium.org',
+    'blink_service_worker': ['horo+watch@chromium.org',
                              'jsbell+serviceworker@chromium.org',
                              'kinuko+serviceworker@chromium.org',
                              'nhiroki@chromium.org',
@@ -2214,7 +2213,6 @@
     'blink_websockets': ['yhirano+watch@chromium.org',
                          'ricea+watch@chromium.org'],
     'blink_workers': ['blink-worker-reviews@chromium.org',
-                      'falken+watch@chromium.org',
                       'horo+watch@chromium.org',
                       'kinuko+worker@chromium.org',
                       'shimazu+worker@chromium.org'],