Release handler block when removing infinite scroll support
Release handler block when removing infinite scroll support

Kianoosh76/UIScrollView-InfiniteScroll,Kianoosh76/UIScrollView-InfiniteScroll,Kianoosh76/UIScrollView-InfiniteScroll,pronebird/UIScrollView-InfiniteScroll,pronebird/UIScrollView-InfiniteScroll,pronebird/UIScrollView-InfiniteScroll