cmd/internal/obj: remove unneeded AVARFOO ops

Change-Id: I10e36046ebce8a8741ef019cfe266b9ac9fa322d
Reviewed-on: https://go-review.googlesource.com/38088
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>

src/cmd/internal/obj/link.go

@@ -293,9 +293,6 @@ const (
 	ARET
 	ATEXT
 	AUNDEF
-	AVARDEF
-	AVARKILL
-	AVARLIVE
 	A_ARCHSPECIFIC
 )
 

src/cmd/internal/obj/util.go

@@ -492,9 +492,6 @@ var Anames = []string{
 	"RET",
 	"TEXT",
 	"UNDEF",
-	"VARDEF",
-	"VARKILL",
-	"VARLIVE",
 }
 
 func Bool2int(b bool) int {

src/cmd/internal/obj/x86/asm6.go

@@ -1699,8 +1699,6 @@ var optab =
 	{AXGETBV, ynone, Pm, [23]uint8{01, 0xd0}},
 	{obj.AFUNCDATA, yfuncdata, Px, [23]uint8{0, 0}},
 	{obj.APCDATA, ypcdata, Px, [23]uint8{0, 0}},
-	{obj.AVARDEF, nil, 0, [23]uint8{}},
-	{obj.AVARKILL, nil, 0, [23]uint8{}},
 	{obj.ADUFFCOPY, yduff, Px, [23]uint8{0xe8}},
 	{obj.ADUFFZERO, yduff, Px, [23]uint8{0xe8}},
 	{obj.AEND, nil, 0, [23]uint8{}},