[runtime] Remove the now unused %StoreArrayLiteralElement.

src/arm64/interface-descriptors-arm64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/arm64/interface-descriptors-arm64.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 167 matching lines @@
 void CreateWeakCellDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x2: feedback vector
   // x3: call feedback slot
   // x1: tagged value to put in the weak cell
   Register registers[] = {x2, x3, x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void StoreArrayLiteralElementDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  Register registers[] = {x3, x0};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void CallFunctionDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x1  function    the function to call
   Register registers[] = {x1};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallFunctionWithFeedbackDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
@@ skipping 292 matching lines @@
       x1    // the runtime function to call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64