Revert "FROMLIST: kbuild: install the modules.order for external modules"

This reverts commit 77cbbcd1. This patch
hasn't landed upstream yet, but needs a fix. So reverting it first to
help keep the fixes together in case we need to forward port this
feature.

Bug: 216462633
Change-Id: Ia96084bd24d0ee27b7addc2acbd5277e46cb86f1
Signed-off-by: Will McVicker <willmcvicker@google.com>