Remove --verbose flag from travis-ci (#3477)
Remove --verbose flag from travis-ci (#3477)

Fixes https://github.com/dask/dask/issues/3441
dask/dask,blaze/dask,ContinuumIO/dask,jcrist/dask,mrocklin/dask,mrocklin/dask,ContinuumIO/dask,dask/dask,jakirkham/dask,jakirkham/dask,jcrist/dask,blaze/dask