Makefile: delete openflowj-loxi target dir
diff --git a/Makefile b/Makefile
index 99ad397..5fee0c1 100644
--- a/Makefile
+++ b/Makefile
@@ -86,6 +86,7 @@
 
 clean:
 	rm -rf loxi_output # only delete generated files in the default directory
+	rm -rf openflowj-loxi
 	rm -f loxigen.log loxigen-test.log .loxi_ts.c .loxi_ts.python .loxi_ts.java
 
 debug: