Move android.hardware.tests.libhwbinder@1.0-impl to system.img

Bug: 64723866
Test: make vts
      vts-tradefed run vts-performance

Change-Id: Ib5e993d98f7fa12dcb2b418a995887b59394c849
diff --git a/tests/libhwbinder/1.0/default/Android.bp b/tests/libhwbinder/1.0/default/Android.bp
index af4caec..13f9c18 100644
--- a/tests/libhwbinder/1.0/default/Android.bp
+++ b/tests/libhwbinder/1.0/default/Android.bp
@@ -1,7 +1,6 @@
 cc_library_shared {
     name: "android.hardware.tests.libhwbinder@1.0-impl",
     relative_install_path: "hw",
-    proprietary: true,
     srcs: [
         "Benchmark.cpp",
         "ScheduleTest.cpp",