Remove unused StringCharCodeAt stub.

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
diff --git a/src/arm/code-stubs-arm.cc b/src/arm/code-stubs-arm.cc
index 31a728879175763da06c42a43440a389c6eeb546..c45b6ab3ccd9679e1ad5f0ac0447aa3c9bf21375 100644
--- a/src/arm/code-stubs-arm.cc
+++ b/src/arm/code-stubs-arm.cc
@@ -6709,56 +6709,6 @@ void StringAddStub::GenerateConvertArgument(MacroAssembler* masm,
 }
 
 
-void StringCharAtStub::Generate(MacroAssembler* masm) {
-  // Expects two arguments (object, index) on the stack:
-  //  lr: return address
-  //  sp[0]: index
-  //  sp[4]: object
-  Register object = r1;
-  Register index = r0;
-  Register scratch1 = r2;
-  Register scratch2 = r3;
-  Register result = r0;
-
-  // Get object and index from the stack.
-  __ pop(index);
-  __ pop(object);
-
-  Label need_conversion;
-  Label index_out_of_range;
-  Label done;
-  StringCharAtGenerator generator(object,
-                                  index,
-                                  scratch1,
-                                  scratch2,
-                                  result,
-                                  &need_conversion,
-                                  &need_conversion,
-                                  &index_out_of_range,
-                                  STRING_INDEX_IS_NUMBER);
-  generator.GenerateFast(masm);
-  __ b(&done);
-
-  __ bind(&index_out_of_range);
-  // When the index is out of range, the spec requires us to return
-  // the empty string.
-  __ LoadRoot(result, Heap::kEmptyStringRootIndex);
-  __ jmp(&done);
-
-  __ bind(&need_conversion);
-  // Move smi zero into the result register, which will trigger
-  // conversion.
-  __ mov(result, Operand(Smi::FromInt(0)));
-  __ b(&done);
-
-  StubRuntimeCallHelper call_helper;
-  generator.GenerateSlow(masm, call_helper);
-
-  __ bind(&done);
-  __ Ret();
-}
-
-
 void ICCompareStub::GenerateSmis(MacroAssembler* masm) {
   ASSERT(state_ == CompareIC::SMIS);
   Label miss;