Remove (H|L)JSArrayLength instructions

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 8848032b643a0fb00d6cb1cd1354c96dd27b1985..6f96d4468fcfbd96c97de6661b8416e166af3f6c 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1585,12 +1585,6 @@ LInstruction* LChunkBuilder::DoClassOfTestAndBranch(
 }
 
 
-LInstruction* LChunkBuilder::DoJSArrayLength(HJSArrayLength* instr) {
-  LOperand* array = UseRegisterAtStart(instr->value());
-  return DefineAsRegister(new(zone()) LJSArrayLength(array));
-}
-
-
 LInstruction* LChunkBuilder::DoFixedArrayBaseLength(
     HFixedArrayBaseLength* instr) {
   LOperand* array = UseRegisterAtStart(instr->value());