Delete unused proguard_config_exclusions variable.

Bug: 866937
Change-Id: Ifc6e7824491f6b89de24d97800852d2288cc9d28
Reviewed-on: https://chromium-review.googlesource.com/1148565
Reviewed-by: Brian Sheedy <bsheedy@chromium.org>
Commit-Queue: Michael van Ouwerkerk <mvanouwerkerk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577825}
1 file changed