Remove more feature in product mode

runtime/vm/disassembler_x64.cc

 // 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.
 
 #include "vm/disassembler.h"
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_X64)
 #include "platform/utils.h"
 #include "vm/allocation.h"
 #include "vm/heap.h"
 #include "vm/os.h"
 #include "vm/stack_frame.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
+#ifndef PRODUCT
 
 enum OperandType {
   UNSET_OP_ORDER = 0,
   // Operand size decides between 16, 32 and 64 bit operands.
   REG_OPER_OP_ORDER = 1,  // Register destination, operand source.
   OPER_REG_OP_ORDER = 2,  // Operand destination, register source.
   // Fixed 8-bit operands.
   BYTE_SIZE_OPERAND_FLAG = 4,
   BYTE_REG_OPER_OP_ORDER = REG_OPER_OP_ORDER | BYTE_SIZE_OPERAND_FLAG,
   BYTE_OPER_REG_OP_ORDER = OPER_REG_OP_ORDER | BYTE_SIZE_OPERAND_FLAG
@@ skipping 1912 matching lines @@
     OS::SNPrint(&hex_buffer[hex_index], remaining_size, "%02x", pc_ptr[i]);
     hex_index += 2;
     remaining_size -= 2;
   }
   hex_buffer[hex_index] = '\0';
   if (out_instr_len) {
     *out_instr_len = instruction_length;
   }
 }
 
+#endif  // !PRODUCT
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64