Fix infra watchlist spec.

I don't want to be CCed on everything.

Change-Id: I14d2af4906be4626827c7cbca7ee59fbe86a8420
Reviewed-on: https://chromium-review.googlesource.com/c/1305633
Commit-Queue: John Budorick <[email protected]>
Commit-Queue: Ben Pastene <[email protected]>
Reviewed-by: Ben Pastene <[email protected]>
Cr-Commit-Position: refs/heads/master@{#603557}
diff --git a/WATCHLISTS b/WATCHLISTS
index 65cb6cd..a7187be 100644
--- a/WATCHLISTS
+++ b/WATCHLISTS
@@ -1000,7 +1000,7 @@
     'infra': {
       'filepath': 'infra/config|'\
                   'testing/buildbot|'\
-                  'tools/mb|',
+                  'tools/mb',
     },
     'ink_drop': {
       'filepath': 'ui/views/animation/test/.*ink_drop.*|' \