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/jni/jni_compiler_test.cc b/compiler/jni/jni_compiler_test.cc
index 561d00f..9927fe1 100644
--- a/compiler/jni/jni_compiler_test.cc
+++ b/compiler/jni/jni_compiler_test.cc
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <memory>
+
 #include "class_linker.h"
 #include "common_compiler_test.h"
 #include "dex_file.h"
@@ -31,7 +33,6 @@
 #include "ScopedLocalRef.h"
 #include "scoped_thread_state_change.h"
 #include "thread.h"
-#include "UniquePtrCompat.h"
 
 extern "C" JNIEXPORT jint JNICALL Java_MyClassNatives_bar(JNIEnv*, jobject, jint count) {
   return count + 1;