remove few test cases

Author: yadav-sachin

pymc/tests/test_distributions_moments.py

@@ -756,20 +756,17 @@ def test_categorical_moment(p, size, expected):
     "mu, cov, size, expected",
     [
         (np.ones(1), np.identity(1), None, np.ones(1)),
-        (np.ones(10), np.identity(10), None, np.ones(10)),
+        (np.ones(3), np.identity(3), None, np.ones(3)),
         (np.ones(2), np.identity(2), 4, np.ones((4, 2))),
-        (np.ones(2), np.identity(2), (4, 3), np.ones((4, 3, 2))),
         (np.ones((2, 2)), np.identity(2), None, np.ones((2, 2))),
-        (np.ones((2, 2)), np.identity(2), 4, np.ones((4, 2, 2))),
-        (np.ones((2, 2)), np.identity(2), (4, 2), np.ones((4, 2, 2, 2))),
         (np.array([1, 0, 3.0]), np.identity(3), None, np.array([1, 0, 3.0])),
         (np.array([1, 0, 3.0]), np.identity(3), 4, np.full((4, 3), [1, 0, 3.0])),
         (np.array([1, 0, 3.0]), np.identity(3), (4, 2), np.full((4, 2, 3), [1, 0, 3.0])),
         (
             np.array([1, 3.0]),
             np.identity(2),
-            (4, 5),
-            np.full((4, 5, 2), [1, 3.0]),
+            5,
+            np.full((5, 2), [1, 3.0]),
         ),
         (
             np.array([1, 3.0]),