Remove obsolete HObjectLiteral instruction.

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 3fe46ffd7b05893967cd162fbefa54284c9c4faa..d90e5d99feddfb1b047e39ee76be4d1580c28604 100644
--- a/src/arm/lithium-arm.cc
+++ b/src/arm/lithium-arm.cc
@@ -2403,11 +2403,6 @@ LInstruction* LChunkBuilder::DoArrayLiteral(HArrayLiteral* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoObjectLiteral(HObjectLiteral* instr) {
-  return MarkAsCall(DefineFixed(new(zone()) LObjectLiteral, r0), instr);
-}
-
-
 LInstruction* LChunkBuilder::DoRegExpLiteral(HRegExpLiteral* instr) {
   return MarkAsCall(DefineFixed(new(zone()) LRegExpLiteral, r0), instr);
 }