Remove use of deprecated, unused keyword. (#2540)
Remove use of deprecated, unused keyword. (#2540)


markelg/xray,jhamman/xray,markelg/xray,pydata/xarray,shoyer/xarray,jhamman/xarray,jhamman/xarray,jhamman/xarray,markelg/xray,chunweiyuan/xarray,pydata/xarray,shoyer/xarray,shoyer/xray,xray/xray,pydata/xarray