Remove old code generator.

runtime/vm/flow_graph_compiler_arm.cc

Index: runtime/vm/flow_graph_compiler_arm.cc
===================================================================
--- runtime/vm/flow_graph_compiler_arm.cc	(revision 9119)
+++ runtime/vm/flow_graph_compiler_arm.cc	(working copy)
@@ -11,20 +11,8 @@
 
 namespace dart {
 
-void FlowGraphCompiler::Bailout(const char* reason) {
-  const char* kFormat = "FlowGraphCompiler Bailout: %s.";
-  intptr_t len = OS::SNPrint(NULL, 0, kFormat, reason) + 1;
-  char* chars = reinterpret_cast<char*>(
-      Isolate::Current()->current_zone()->Allocate(len));
-  OS::SNPrint(chars, len, kFormat, reason);
-  const Error& error = Error::Handle(
-      LanguageError::New(String::Handle(String::New(chars))));
-  Isolate::Current()->long_jump_base()->Jump(1, error);
-}
-
-
 void FlowGraphCompiler::CompileGraph() {
-  Bailout("CompileGraph");
+  UNIMPLEMENTED();
 }
 
 
@@ -52,7 +40,6 @@
   UNIMPLEMENTED();
 }
 
-
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM