TEAM++, owners-- in settings_reset_prompt

The current OWNERS of safe_browsing/settings_reset_prompt haven't dealt
with this code for a long time. Removing them so the ownership falls
back to the inherited safe_browsing team.

Leaving the OWNERS file in existence to specify a different COMPONENT
for this subdir though.

R=csharp@chromium.org, vakh@chromium.org

Bug: 1013608
Change-Id: I60d82877e1d235e732554c6d7d6e95cb67358e93
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893532Reviewed-by: Chris Sharp <csharp@chromium.org>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Joe Mason <joenotcharles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#712196}

chrome/browser/safe_browsing/settings_reset_prompt/OWNERS

-csharp@chromium.org
-robertshield@chromium.org
+# Inherit owners from the parent directory, but use a different component.
 
+# TEAM: security-dev@chromium.org
 # COMPONENT: UI>Browser>Preferences>Protector