Move test apk out of the virt apex

The test apk is removed from the virt APEX, and installed as a
standalone test apk.

Bug: N/A
Test: atest MicrodroidHostTestCases
Change-Id: Ie68b88c413db9606ce081bd276c2e88a81722bb8
diff --git a/tests/testapk/Android.bp b/tests/testapk/Android.bp
index 277ccc8..f2dad62 100644
--- a/tests/testapk/Android.bp
+++ b/tests/testapk/Android.bp
@@ -7,7 +7,7 @@
     srcs: ["src/java/**/*.java"],
     jni_libs: ["MicrodroidTestNativeLib"],
     sdk_version: "current",
-    apex_available: ["com.android.virt"], // TODO(jiyong): remove this from virt APEX
+    use_embedded_native_libs: true,
 }
 
 // TODO(jiyong): make this a binary, not a shared library
@@ -15,5 +15,4 @@
     name: "MicrodroidTestNativeLib",
     srcs: ["src/native/*.cpp"],
     sdk_version: "current",
-    apex_available: ["com.android.virt"], // TODO(jiyong): remove this from virt APEX
 }