update tests

Author: Atheer Alsayah

docs/notebooks/lrdata_to_Mudata.ipynb

@@ -37,12 +37,4 @@ def zi_minmax_cutoff(x):
                              x_transform=neg_to_zero, y_transform=False,
                              verbose=False)
     assert_almost_equal(adata.X.max(), 7.760507, decimal=5)
-    assert_almost_equal(adata.X.min(), 0, decimal=5)
-
-
-def test_adata_to_mdata():
-    from scanpy.datasets import pbmc68k_reduced
-    adata = pbmc68k_reduced()
-    mdata = anndata_to_mdata(adata = adata, groupby = "bulk_labels", min_cells = 0)
-
-    assert mdata.shape == (adata.shape[0], adata.shape[1] * adata.obs["bulk_labels"].nunique())
+    assert_almost_equal(adata.X.min(), 0, decimal=5)