cmd/internal/obj/arm: remove CASE and BCASE

Update #10994

CASE and BCASE were used by 5c in switch statements, cmd/compile
does not use them.

Change-Id: I7a578c461b52b94690e35460926849b28971b770
Reviewed-on: https://go-review.googlesource.com/14009
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/src/cmd/compile/internal/arm/peep.go b/src/cmd/compile/internal/arm/peep.go
index 66eba41..4fba434 100644
--- a/src/cmd/compile/internal/arm/peep.go
+++ b/src/cmd/compile/internal/arm/peep.go
@@ -1198,7 +1198,6 @@
 		arm.ACMPD,
 		arm.ACMP,
 		arm.ACMN,
-		arm.ACASE,
 		arm.ATST:
 		/* read,, */
 		if s != nil {
@@ -1560,9 +1559,7 @@
 		obj.ADATA,
 		obj.AGLOBL,
 		obj.ATEXT,
-		arm.AWORD,
-		arm.ABCASE,
-		arm.ACASE:
+		arm.AWORD:
 		return false
 	}