runtime: remove unused function casp
Ian Lance Taylor authored
Change-Id: I7c9c83ba236e1050e04377a7591fef7174df698b
Reviewed-on: https://go-review.googlesource.com/130415


Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: default avatarBrad Fitzpatrick <bradfitz@golang.org>
6ebc31f9