Unify SoftDeoptimize and Deoptimize hydrogen instructions

src/arm/lithium-arm.cc

Index: src/arm/lithium-arm.cc
diff --git a/src/arm/lithium-arm.cc b/src/arm/lithium-arm.cc
index b68d22f33607aaf1e75d97b9278823d6b795e91d..cf79d0bdc088467233b5ae3d2f0964062f994acd 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -701,11 +701,6 @@ LInstruction* LChunkBuilder::DoEnvironmentMarker(HEnvironmentMarker* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoSoftDeoptimize(HSoftDeoptimize* instr) {
-  return AssignEnvironment(new(zone()) LDeoptimize);
-}
-
-
 LInstruction* LChunkBuilder::DoDeoptimize(HDeoptimize* instr) {
   return AssignEnvironment(new(zone()) LDeoptimize);
 }