Disable OS X build on Travis-CI (#1633)
Disable OS X build on Travis-CI (#1633)

It has been broken for quite some time ("language: python" is not support
on OS X builds) and I don't think there's any motivation among us to fix it.
dask/distributed,blaze/distributed,mrocklin/distributed,mrocklin/distributed,mrocklin/distributed,dask/distributed,dask/distributed,blaze/distributed,dask/distributed