xbuddy: Remove the 'project_sdk' image target.

This is no longer used.

CQ-DEPEND=CL:283923
BUG=chromium:507508
TEST=xbuddy_unittest

Change-Id: I46f92d6366fadc01b89d53d53b48a65a840dff70
Reviewed-on: https://chromium-review.googlesource.com/283926
Tested-by: Gilad Arnold <garnold@chromium.org>
Reviewed-by: Chris Sosa <sosa@chromium.org>
Commit-Queue: Gilad Arnold <garnold@chromium.org>
1 file changed