Revert "Convert UnaryOpStub to a HydrogenCodeStub"

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 854ea15c2fa3cfe7ab3ea5e5c64918ff75ef9443..b08353e069e79be190e519677f501377ba12ee59 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -1998,18 +1998,6 @@ LInstruction* LChunkBuilder::DoCheckHeapObject(HCheckHeapObject* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoCheckSmi(HCheckSmi* instr) {
-  LOperand* value = UseRegisterAtStart(instr->value());
-  return AssignEnvironment(new(zone()) LCheckSmi(value));
-}
-
-
-LInstruction* LChunkBuilder::DoIsNumberAndBranch(HIsNumberAndBranch* instr) {
-  return new(zone())
-    LIsNumberAndBranch(UseRegisterOrConstantAtStart(instr->value()));
-}
-
-
 LInstruction* LChunkBuilder::DoCheckInstanceType(HCheckInstanceType* instr) {
   LOperand* value = UseRegisterAtStart(instr->value());
   LInstruction* result = new(zone()) LCheckInstanceType(value);