[builtins] Refactor the remaining Date builtins.

src/crankshaft/arm/lithium-arm.cc

Index: src/crankshaft/arm/lithium-arm.cc
diff --git a/src/crankshaft/arm/lithium-arm.cc b/src/crankshaft/arm/lithium-arm.cc
index a38f1c71161eafda1e5302fee3357857b731e459..cd736ecd8f02d23bb8a09432addd549c76453c41 100644
--- a/src/crankshaft/arm/lithium-arm.cc
+++ b/src/crankshaft/arm/lithium-arm.cc
@@ -1825,14 +1825,6 @@ LInstruction* LChunkBuilder::DoMapEnumLength(HMapEnumLength* instr) {
 }
 
 
-LInstruction* LChunkBuilder::DoDateField(HDateField* instr) {
-  LOperand* object = UseFixed(instr->value(), r0);
-  LDateField* result =
-      new(zone()) LDateField(object, FixedTemp(r1), instr->index());
-  return MarkAsCall(DefineFixed(result, r0), instr, CANNOT_DEOPTIMIZE_EAGERLY);
-}
-
-
 LInstruction* LChunkBuilder::DoSeqStringGetChar(HSeqStringGetChar* instr) {
   LOperand* string = UseRegisterAtStart(instr->string());
   LOperand* index = UseRegisterOrConstantAtStart(instr->index());