VM: Remove unused optimization of merging of sin/cos.

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 34 matching lines @@
 bool FlowGraphCompiler::SupportsUnboxedMints() {
   return FLAG_unbox_mints;
 }
 
 
 bool FlowGraphCompiler::SupportsUnboxedSimd128() {
   return FLAG_enable_simd_inline;
 }
 
 
-bool FlowGraphCompiler::SupportsSinCos() {
-  return true;
-}
-
-
 bool FlowGraphCompiler::SupportsHardwareDivision() {
   return true;
 }
 
 
 bool FlowGraphCompiler::CanConvertUnboxedMintToDouble() {
   return false;
 }
 
 
@@ skipping 1708 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64