Fix misuse of $(my-dir).

Change-Id: I8b24f60826abe4b541de646cbc3df66929203301
diff --git a/libs/ui/tests/Android.mk b/libs/ui/tests/Android.mk
index 6f62a55..b0c57db 100644
--- a/libs/ui/tests/Android.mk
+++ b/libs/ui/tests/Android.mk
@@ -26,8 +26,6 @@
 )
 
 # Build the unit tests.
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
 
 # Build the manual test programs.
 include $(call all-makefiles-under, $(LOCAL_PATH))