Remove TODO comment which has been completed

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I41b56acf3c5f733b8b75afe8533a7be6876147d7
Reviewed-on: https://chromium-review.googlesource.com/1144804
Reviewed-by: John Wu <jzw@chromium.org>
Commit-Queue: John Wu <jzw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576896}
1 file changed