8l: remove unneeded windows check
8l: remove unneeded windows check

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/3691042

Committer: Alex Brainman <54ba58c8441b5eff861de6b4e5ee46baf086b142@gmail.com>

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go