Clean redundant Dir delete
Clean redundant Dir delete

jeme/lucenenet,NightOwl888/lucenenet,apache/lucenenet,jpsullivan/lucenenet,mdissel/lucene.net,jeme/lucenenet,sisve/lucenenet,sisve/lucenenet,antiufo/lucenenet,mdissel/lucene.net,NightOwl888/lucenenet,jeme/lucenenet,antiufo/lucenenet,apache/lucenenet,jeme/lucenenet,jpsullivan/lucenenet,zmaruo/lucenenet,NightOwl888/lucenenet,NightOwl888/lucenenet,laimis/lucenenet,apache/lucenenet,zmaruo/lucenenet,laimis/lucenenet,apache/lucenenet