NetS13nSW: Remove old path around timers

Bug: 852658, 926114
Change-Id: I57f0b0c743ce82e59c654bfa876792a882847019
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1511172
Commit-Queue: Makoto Shimazu <shimazu@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639820}
13 files changed