Remove more feature in product mode

runtime/vm/disassembler.cc

 // Copyright (c) 2011, 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/disassembler.h"
 
 #include "vm/assembler.h"
 #include "vm/globals.h"
 #include "vm/il_printer.h"
 #include "vm/instructions.h"
 #include "vm/json_stream.h"
 #include "vm/log.h"
 #include "vm/os.h"
 #include "vm/code_patcher.h"
 
 
 namespace dart {
 
+#ifndef PRODUCT
+
 void DisassembleToStdout::ConsumeInstruction(const Code& code,
                                              char* hex_buffer,
                                              intptr_t hex_size,
                                              char* human_buffer,
                                              intptr_t human_size,
                                              uword pc) {
   static const int kHexColumnWidth = 23;
   uint8_t* pc_ptr = reinterpret_cast<uint8_t*>(pc);
   THR_Print("%p    %s", pc_ptr, hex_buffer);
   int hex_length = strlen(hex_buffer);
@@ skipping 146 matching lines @@
     formatter->ConsumeInstruction(code,
                                   hex_buffer,
                                   sizeof(hex_buffer),
                                   human_buffer,
                                   sizeof(human_buffer),
                                   pc);
     pc += instruction_length;
   }
 }
 
+#endif  // !PRODUCT
+
 }  // namespace dart