Remove obsolete class.
Remove obsolete class.

komizutama/tsugi,tsugiproject/tsugi,reysantos/tsugi,cvanlent/tsugi,JANQLIANGTSAI/tsugi,reysantos/tsugi,JANQLIANGTSAI/tsugi,cvanlent/tsugi,komizutama/tsugi,tsugiproject/tsugi,csev/tsugi,tsugiproject/tsugi,komizutama/tsugi,JANQLIANGTSAI/tsugi,cvanlent/tsugi,reysantos/tsugi,tsugiproject/tsugi