Remove subresource_filter owners no longer working on the project

Bug: None
Change-Id: I56ef31ecfaebe5bfd14ec57826d99578ae17a883
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1841231Reviewed-by: Dominic Battré <battre@chromium.org>
Reviewed-by: Balazs Engedy <engedy@chromium.org>
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703701}

components/subresource_filter/OWNERS

-battre@chromium.org
 csharrison@chromium.org
-engedy@chromium.org
 jkarlin@chromium.org
-melandory@chromium.org
-pkalinnikov@chromium.org
 
-# COMPONENT: UI>Browser>AdFilter
+# COMPONENT: UI>Browser>AdFilter
\ No newline at end of file