Kill obsolete HLoadExternalArrayPointer instruction.

src/x64/lithium-codegen-x64.cc

Index: src/x64/lithium-codegen-x64.cc
diff --git a/src/x64/lithium-codegen-x64.cc b/src/x64/lithium-codegen-x64.cc
index 131cbb8f5086b5fad31e282bc4bbfea6ceb737d4..e4436cac29fc1fb99440b128fa47c6cf569fd605 100644
--- a/src/x64/lithium-codegen-x64.cc
+++ b/src/x64/lithium-codegen-x64.cc
@@ -2899,16 +2899,6 @@ void LCodeGen::DoLoadRoot(LLoadRoot* instr) {
 }
 
 
-void LCodeGen::DoLoadExternalArrayPointer(
-    LLoadExternalArrayPointer* instr) {
-  Register result = ToRegister(instr->result());
-  Register input = ToRegister(instr->object());
-  __ movp(result,
-        FieldOperand(input,
-                     ExternalUint8ClampedArray::kExternalPointerOffset));
-}
-
-
 void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) {
   Register arguments = ToRegister(instr->arguments());
   Register result = ToRegister(instr->result());