Removed lib directory.
Removed lib directory.

Change-Id: Ie7d8b019484aaaeecc217ca79f98b99a1f0f17b1
Reviewed-on: https://dbserver.korea.ac.kr/reviews/185
Reviewed-by: Hyunsik Choi <05a3172daee8e68f070c7e3940f4ecf228130ad0@gmail.com>
Tested-by: Hyunsik Choi <05a3172daee8e68f070c7e3940f4ecf228130ad0@gmail.com>

hyunsik/incubator-tajo,gruter/tajo-cdh,hyunsik/incubator-tajo,apache/incubator-tajo,gruter/tajo-cdh,yeeunshim/tajo_test,hyunsik/incubator-tajo,apache/incubator-tajo,yeeunshim/tajo_test,yeeunshim/tajo_test,yeeunshim/tajo_test,apache/incubator-tajo,apache/incubator-tajo,gruter/tajo-cdh,gruter/tajo-cdh,hyunsik/incubator-tajo