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

runtime/vm/flow_graph_compiler.h

 // Copyright (c) 2012, 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.
 
 #ifndef RUNTIME_VM_FLOW_GRAPH_COMPILER_H_
 #define RUNTIME_VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 274 matching lines @@
                     const ParsedFunction& parsed_function,
                     bool is_optimizing,
                     const GrowableArray<const Function*>& inline_id_to_function,
                     const GrowableArray<TokenPosition>& inline_id_to_token_pos,
                     const GrowableArray<intptr_t>& caller_inline_id);
 
   ~FlowGraphCompiler();
 
   static bool SupportsUnboxedDoubles();
   static bool SupportsUnboxedMints();
-  static bool SupportsSinCos();
   static bool SupportsUnboxedSimd128();
   static bool SupportsHardwareDivision();
   static bool CanConvertUnboxedMintToDouble();
 
   static bool IsUnboxedField(const Field& field);
   static bool IsPotentialUnboxedField(const Field& field);
 
   // Accessors.
   Assembler* assembler() const { return assembler_; }
   const ParsedFunction& parsed_function() const { return parsed_function_; }
@@ skipping 509 matching lines @@
   const GrowableArray<const Function*>& inline_id_to_function_;
   const GrowableArray<TokenPosition>& inline_id_to_token_pos_;
   const GrowableArray<intptr_t>& caller_inline_id_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_FLOW_GRAPH_COMPILER_H_