Reverted an accidental change to utils.dict_equal
Reverted an accidental change to utils.dict_equal

hetland/xray,shoyer/xray,petercable/xray,clarkfitzg/xray,shoyer/xarray,jhamman/xarray,shoyer/xarray,drewokane/xray,pydata/xarray,pydata/xarray,markelg/xray,pydata/xarray,hetland/xray,clarkfitzg/xray,xray/xray,rabernat/xray,markelg/xray,rabernat/xray,NicWayand/xray,jhamman/xarray,chunweiyuan/xarray,kjordahl/xray,jhamman/xray,jhamman/xarray,jcmgray/xarray,markelg/xray,cpaulik/xray,kjordahl/xray,cpaulik/xray