Build with core_current

This lib has been built with core-libart and core-oj which include
private APIs. In order to prevent this lib from depending on the private
APIs in the future, directly dependency to the core libraries are
replaced with the pseudo-sdk stub called 'core_current' that has public
core Java APIs only.

Bug: 72206056
Test: mma -j under this directory
Change-Id: Ia2d91c9911fe4fb4ab9bc8ae06d78829cafef0c3
diff --git a/Android.bp b/Android.bp
index 83801dd..5bc72c0 100644
--- a/Android.bp
+++ b/Android.bp
@@ -38,7 +38,7 @@
 
     jarjar_rules: "jarjar-rules.txt",
 
-    no_framework_libs: true,
+    sdk_version: "core_current",
     java_version: "1.7",
 }