aw: Remove a duplicated entry for CTS failure

There are two entries for testOnJsBeforeUnloadIsCalled, removing this
one since the crbug is marked as fixed. The other one is assigned to me.

Bug: 719974
Test: validated with json validator
Change-Id: Ie9973a7ad81a3425b1476fb75e400e7ff6aa7db9
Reviewed-on: https://chromium-review.googlesource.com/c/1492471
Reviewed-by: Tao Bai <[email protected]>
Commit-Queue: Shimi Zhang <[email protected]>
Cr-Commit-Position: refs/heads/master@{#636119}
1 file changed