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

ssrl/go,pombredanne/go-deleteme,dsriram/golang,tv42/old-go,tv42/old-go,apparentlymart/golang,dsriram/golang,h8liu/golang,apparentlymart/golang,pombredanne/go-deleteme,gnanderson/go,tv42/old-go,h8liu/golang,pombredanne/go-deleteme,ssrl/go,tv42/old-go,tv42/old-go,apparentlymart/golang,dsriram/golang,pombredanne/go-deleteme,gnanderson/go,ssrl/go,h8liu/golang,gnanderson/go,ssrl/go,h8liu/golang,dsriram/golang,dsriram/golang,pombredanne/go-deleteme,dsriram/golang,gnanderson/go,tv42/old-go,pombredanne/go-deleteme,gnanderson/go,tv42/old-go,gnanderson/go,ssrl/go,apparentlymart/golang,apparentlymart/golang,apparentlymart/golang,dsriram/golang,h8liu/golang,h8liu/golang,h8liu/golang,ssrl/go,gnanderson/go,ssrl/go,apparentlymart/golang,pombredanne/go-deleteme