Remove duplicate Dask Bag example
Remove duplicate Dask Bag example

cowlicks/dask,dask/dask,dask/dask,blaze/dask,blaze/dask,cpcloud/dask,jcrist/dask,gameduell/dask,mrocklin/dask,mikegraham/dask,jakirkham/dask,jakirkham/dask,mraspaud/dask,mraspaud/dask,chrisbarber/dask,ContinuumIO/dask,jcrist/dask,ContinuumIO/dask,mrocklin/dask