Remove the HValueOf instruction.

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 ee64f8ee030f4605d431240c0e992f0731cb4724..3be1313c077db56893d393a1c52063b8454b56c1 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1639,13 +1639,6 @@ LInstruction* LChunkBuilder::DoElementsKind(HElementsKind* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoValueOf(HValueOf* instr) {
-  LOperand* object = UseRegister(instr->value());
-  LValueOf* result = new(zone()) LValueOf(object, TempRegister());
-  return DefineAsRegister(result);
-}
-
-
 LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
   LOperand* object = UseFixed(instr->value(), a0);
   LDateField* result =