Remove dead code in SVGResources::RemoveClientFromCache

This method is never called for a LayoutObject which has a "linked"
resource (<pattern>), so remove the handling of |linked_resource_|.

Change-Id: I8c57804ecb58f4b7e286e427f0b7de84909286b8
Reviewed-on: https://chromium-review.googlesource.com/1243807
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Commit-Queue: Fredrik Söderquist <fs@opera.com>
Cr-Commit-Position: refs/heads/master@{#594041}
1 file changed