Deprecate old mutliarch code, phase 1

Deprecate old mutliarch code, phase 1

It is causing compilation sloness with gcc-7 so removing it
before it was originally planned.

So far macros are left in the tree so we can know which nodes to
convert to new multiarch code.

Change-Id: Idb14622ca61fdce1eba59723b20d98715b7971e6
Signed-off-by: Damjan Marion <damarion@cisco.com>