time: Remove unused zoneinfo.go (replaced by zoneinfo_unix.go).
time: Remove unused zoneinfo.go (replaced by zoneinfo_unix.go).

R=r, rsc
CC=brainman, golang-dev
http://codereview.appspot.com/2020043

wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang,firebitsbr/golang-old,wesolows/golang-old,firebitsbr/golang-old,wesolows/golang,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang-old,wesolows/golang,wesolows/golang-old,wesolows/golang,firebitsbr/golang-old,wesolows/golang