Remove subresource redirect origin sharding

Change-Id: Ifc8c20506e46c1be957bf551325d4bb4fd63678b
Fixed: 1142526
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2514069


Commit-Queue: Robert Ogden <robertogden@chromium.org>
Auto-Submit: rajendrant <rajendrant@chromium.org>
Reviewed-by: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823258}