cmd/link: remove unused field LSym.Hash

Change-Id: Idc5c4a69919a8ed9d76d4a9cfd9827fb5c59dd11
Reviewed-on: https://go-review.googlesource.com/16389Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/link/internal/ld/link.go

@@ -67,7 +67,6 @@ type LSym struct {
 	Locals      int32
 	Value       int64
 	Size        int64
-	Hash        *LSym
 	Allsym      *LSym
 	Next        *LSym
 	Sub         *LSym