Remove myself from all OWNERS files

Bug:
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I9d2153a6a7be53b8a6fcc1ce837a1ba1f7b9239d

TBR=kbr@chromium.org

Change-Id: I9d2153a6a7be53b8a6fcc1ce837a1ba1f7b9239d
Reviewed-on: https://chromium-review.googlesource.com/744381
Commit-Queue: Stanislav Chiknavaryan <stanisc@chromium.org>
Reviewed-by: Stanislav Chiknavaryan <stanisc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513007}

components/sync/OWNERS

 pavely@chromium.org
 skym@chromium.org
-stanisc@chromium.org
 zea@chromium.org
 
 # COMPONENT: Services>Sync

gpu/ipc/service/OWNERS

 # Mac stuff.
 per-file *_mac*=ccameron@chromium.org
-
-# Win stuff
-per-file *_win*=stanisc@chromium.org

tools/win/OWNERS

 brucedawson@chromium.org
 scottmg@chromium.org
-stanisc@chromium.org
\ No newline at end of file