More miscellaneous cuDF Python testing cleanups

python/cudf/cudf/testing/_utils.py

@@ -72,10 +72,10 @@
 ]
 
 
-def set_random_null_mask_inplace(series, null_probability=0.5, seed=None):
+def set_random_null_mask_inplace(series, null_probability=0.5):
     """Randomly nullify elements in series with the provided probability."""
     probs = [null_probability, 1 - null_probability]
-    rng = np.random.default_rng(seed=seed)
+    rng = np.random.default_rng(seed=0)
     mask = rng.choice([False, True], size=len(series), p=probs)
     series.iloc[mask] = None
 

python/cudf/cudf/tests/test_doctests.py

@@ -97,9 +97,6 @@ def _find_doctests_in_obj(obj, finder=None, criteria=None):
     "register_series_accessor": pytest.mark.filterwarnings(
         "ignore:Attribute .* will be overridden:UserWarning"
     ),
-    "StringMethods.edit_distance_matrix": pytest.mark.filterwarnings(
-        "ignore:edit_distance_matrix:FutureWarning"
-    ),
 }