Fix kila-tests. Don't install libocr.so by default in kila-tests
diff --git a/Android.mk b/Android.mk
index bf26318..9818ebf 100755
--- a/Android.mk
+++ b/Android.mk
@@ -435,7 +435,7 @@
 LOCAL_SHARED_LIBRARIES:= \
 	liblog
 
-LOCAL_MODULE_TAGS := tests
+LOCAL_MODULE_TAGS := optional
 
 LOCAL_MODULE:= libocr