arm/armspec: remove unfinished code

This was the start of something but never completed.
It's in the history if we need it.

Change-Id: I059e0822c33fe78df3bb988a155a8bcdca677ada
Reviewed-on: https://go-review.googlesource.com/13973
Reviewed-by: Ian Lance Taylor <iant@golang.org>
4 files changed