Remove attempt to exclude LayoutTests from checkout
Remove attempt to exclude LayoutTests from checkout

This method hasn't worked for a long time.
Blink is moving into Chromium along with the LayoutTests
so this is just dead code.

BUG=chromium:345464
TEST=None

Change-Id: Ifcd27ed790d08e01a6b4b43eec8935c88d3358a3
Reviewed-on: https://chromium-review.googlesource.com/187350
Reviewed-by: Eric Seidel <76c92ef94d28285880e6d7f62852909c1d7b12b8@chromium.org>
Commit-Queue: Eric Seidel <76c92ef94d28285880e6d7f62852909c1d7b12b8@chromium.org>
Tested-by: Eric Seidel <76c92ef94d28285880e6d7f62852909c1d7b12b8@chromium.org>
Tested-by: Peter Mayo <3d31fdaf44dc55bb1b4f50b19df9bc879177d37a@chromium.org>

chadversary/chromiumos.chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite