fix removeDDF
fix removeDDF

uncache all representation before reseting

ubolonton/DDF,ddf-project/DDF,ddf-project/DDF,ddf-project/DDF,ddf-project/DDF,ubolonton/DDF,milliondreams/ddf-with-flink,ubolonton/DDF,hsaputra/DDF,hsaputra/DDF,hsaputra/DDF,phvu/DDF,milliondreams/ddf-with-flink,hsaputra/DDF,phvu/DDF,ddf-project/ddf-flink,ddf-project/ddf-flink,ubolonton/DDF,ubolonton/DDF,hsaputra/DDF,phvu/DDF,ddf-project/DDF,phvu/DDF,phvu/DDF