Now we have a proper C++ library, use std::unique_ptr.

Also remove the Android.libcxx.mk and other bits of stlport compatibility
mechanics.

Change-Id: Icdf7188ba3c79cdf5617672c1cfd0a68ae596a61
diff --git a/compiler/compiled_method.h b/compiler/compiled_method.h
index c3c9961..23cd250 100644
--- a/compiler/compiled_method.h
+++ b/compiler/compiled_method.h
@@ -17,12 +17,12 @@
 #ifndef ART_COMPILER_COMPILED_METHOD_H_
 #define ART_COMPILER_COMPILED_METHOD_H_
 
+#include <memory>
 #include <string>
 #include <vector>
 
 #include "instruction_set.h"
 #include "utils.h"
-#include "UniquePtrCompat.h"
 
 namespace llvm {
   class Function;