Remove duplicate header wtf/test/string_statics.h from sources list

A header appeared twice in the sources list which confused some
other tool. Seems like better to have it there only once.

Change-Id: If713c5a241fab6e8fb30705240bc534e0598f704
Reviewed-on: https://chromium-review.googlesource.com/c/1290909
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Commit-Queue: Daniel Bratell <bratell@opera.com>
Cr-Commit-Position: refs/heads/master@{#601331}
1 file changed