migrate test to xarray

Author: dcherian

tests/test_xarray.py

@@ -290,12 +290,4 @@ def test_xarray_groupby_bins(chunks):
     )
     xr.testing.assert_equal(actual, expected)
 
-    da = xr.DataArray(np.random.randn(2, 3, 4))
-    bins = [-1, 0, 1, 2]
-    with xr.set_options(use_numpy_groupies=False):
-        actual = da.groupby_bins("dim_0", bins).mean(...)
-    with xr.set_options(use_numpy_groupies=True):
-        expected = da.groupby_bins("dim_0", bins).mean(...)
-        xr.testing.assert_allclose(actual, expected)
-
     # TODO: test cut_kwargs