Drop "depthcharge" and "unified_depthcharge" portage use symbols

We build all firmware with depthcharge now, and all with the same
"unified" configuration, so there's no need for these qualifiers.

BUG=chromium:595715
BRANCH=none
TEST=builds still pass
CQ-DEPEND=CL:406188

Change-Id: I6ab8a7849d81f7617d5cafb0b423b073e8029c90
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/406169
Commit-Ready: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed