Remove dpranke@google.com from OWNERS.

I'll be out for a while, so I'm removing myself from various
OWNERS files to avoid confusion.

Change-Id: Icfc161229f8376c856a25a4f4849270bd9f39924
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3434226Reviewed-by: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>

OWNERS

@@ -2,7 +2,6 @@ set noparent
 
 apolito@google.com
 aravindvasudev@google.com
-dpranke@google.com
 gavinmak@google.com
 jochen@chromium.org
 sokcevic@google.com