remove type annotations from autodoc method signatures (#3179)
remove type annotations from autodoc method signatures (#3179)


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