Remove delphick from background_fetch OWNERS

Change-Id: I398ff513479ffc26dc1117b4a1a35b37b30c5b71
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1704759
Commit-Queue: Dan Elphick <delphick@chromium.org>
Commit-Queue: Peter Beverloo <peter@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Reviewed-by: Peter Beverloo <peter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#682222}

content/browser/background_fetch/OWNERS

@@ -4,7 +4,6 @@
 # //content/common/background_fetch/
 
 peter@chromium.org
-delphick@chromium.org
 nator@chromium.org
 rayankans@chromium.org