Remove MIPS support

runtime/vm/object_mips_test.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 "platform/assert.h"
-#include "vm/globals.h"
-#if defined(TARGET_ARCH_MIPS)
-
-#include "vm/assembler.h"
-#include "vm/object.h"
-#include "vm/unit_test.h"
-
-namespace dart {
-
-#define __ assembler->
-
-
-// Generate a simple dart code sequence.
-// This is used to test Code and Instruction object creation.
-void GenerateIncrement(Assembler* assembler) {
-  __ Push(ZR);
-  __ lw(TMP, Address(SP, 0));
-  __ addiu(TMP, TMP, Immediate(1));
-  __ sw(TMP, Address(SP, 0));
-  __ lw(TMP, Address(SP, 0));
-  __ addiu(TMP, TMP, Immediate(1));
-  __ Pop(V0);
-  __ mov(V0, TMP);
-  __ Ret();
-}
-
-
-// Generate a dart code sequence that embeds a string object in it.
-// This is used to test Embedded String objects in the instructions.
-void GenerateEmbedStringInCode(Assembler* assembler, const char* str) {
-  __ EnterDartFrame(0);  // To setup pp.
-  const String& string_object =
-      String::ZoneHandle(String::New(str, Heap::kOld));
-  __ LoadObject(V0, string_object);
-  __ LeaveDartFrameAndReturn();
-}
-
-
-// Generate a dart code sequence that embeds a smi object in it.
-// This is used to test Embedded Smi objects in the instructions.
-void GenerateEmbedSmiInCode(Assembler* assembler, intptr_t value) {
-  // No need to setup pp, since Smis are not stored in the object pool.
-  const Smi& smi_object = Smi::ZoneHandle(Smi::New(value));
-  __ LoadObject(V0, smi_object);
-  __ Ret();
-}
-
-}  // namespace dart
-
-#endif  // defined TARGET_ARCH_MIPS