remove old visualization code
remove old visualization code

vikhyat/dask,PhE/dask,wiso/dask,ContinuumIO/dask,clarkfitzg/dask,dask/dask,ssanderson/dask,mraspaud/dask,mrocklin/dask,jakirkham/dask,PhE/dask,jcrist/dask,cowlicks/dask,jayhetee/dask,clarkfitzg/dask,mikegraham/dask,ssanderson/dask,chrisbarber/dask,jakirkham/dask,blaze/dask,jayhetee/dask,mrocklin/dask,jcrist/dask,pombredanne/dask,blaze/dask,wiso/dask,gameduell/dask,dask/dask,vikhyat/dask,ContinuumIO/dask,mraspaud/dask,pombredanne/dask,cpcloud/dask