Remove the barely used macro assemblers after merging their contents to the base

runtime/vm/intermediate_language_arm.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_ARM.
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 53 matching lines @@
   // A finally clause may leave a previously pushed return value if it
   // has its own return instruction. Method that have finally are currently
   // not optimized.
   if (!compiler->HasFinally()) {
     __ sub(R2, FP, ShifterOperand(SP));
     // + 1 for saved PP.
     __ CompareImmediate(R2, (compiler->StackSize() + 1) * kWordSize);
     __ bkpt(0, NE);
   }
 #endif
-  AssemblerMacros::LeaveDartFrame(compiler->assembler());
+  __ LeaveDartFrame();
   __ Ret();
 
   // Generate 2 NOP instructions so that the debugger can patch the return
   // pattern (1 instruction) with a call to the debug stub (3 instructions).
   __ nop();
   __ nop();
   compiler->AddCurrentDescriptor(PcDescriptors::kReturn,
                                  Isolate::kNoDeoptId,
                                  token_pos());
 }
@@ skipping 740 matching lines @@
 
 
 void CreateClosureInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   UNIMPLEMENTED();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM