Revert "chromeos-base/arc-build-nyc: Add support for multilib"

This reverts commit b4d8ff0fc902787624b8d9e864e95e177ad19b33.

Reason for revert:
Unable to start surfaceflinger - /vendor/lib64/egl now has the
libraries when trying to run 32-bit ABI Android.

BUG=chromium:746548
TEST=Start x86 Android on a 64-bit Intel device
CQ-DEPEND=CL:578671

Change-Id: I07ed27e76613c6ad9141232402af6ed443636570
Reviewed-on: https://chromium-review.googlesource.com/578564
Tested-by: Josh Horwich <jhorwich@chromium.org>
Reviewed-by: Luis Hector Chavez <lhchavez@chromium.org>
2 files changed