Remove conditional code for libchrome <= 242728

This CL removes unnecessary conditional code for libchrome <= 242728,
which no longer exists.

BUG=None
CQ-DEPEND=CL:196761
CQ-DEPEND=CL:196708
CQ-DEPEND=CL:196834
TEST=`FEATURES=test emerge-$BOARD platform2`

Change-Id: I8486b10c73a9d7d3a483c74c5ef5918e430e1971
Reviewed-on: https://chromium-review.googlesource.com/196762
Reviewed-by: Daniel Erat <derat@chromium.org>
Commit-Queue: Ben Chan <benchan@chromium.org>
Tested-by: Ben Chan <benchan@chromium.org>
14 files changed