Apply suggestion from @Alvaro-Kothe

Co-authored-by: Álvaro Kothe <[email protected]>

Author: SebastianGoldmann

pandas/tests/window/test_rolling_skew_kurt.py

@@ -213,7 +213,6 @@ def test_rolling_kurt_edge_cases(step):
 
 def test_rolling_skew_eq_value_fperr(step):
     # #18804 all rolling skew for all equal values should return NaN
-    # #46717 update: all equal values should return 0 instead of NaN
     a = Series([1.1] * 15).rolling(window=10, step=step).skew()
     assert a.isna().all()