Remove eugenebut from ios/components owners

Bug: None
Change-Id: I5ddc1f369f999731aa0c8a8784b3dd8d5f3bade0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2634231
Auto-Submit: Eugene But <eugenebut@chromium.org>
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#844481}

ios/components/OWNERS

-eugenebut@chromium.org
 michaeldo@chromium.org
-sdefresne@chromium.org
\ No newline at end of file
+sdefresne@chromium.org