Revert "use numpy.array_equal instead of =="

This reverts commit 86c11c9.

Author: hasnain2808

pandas/tests/series/test_analytics.py

@@ -859,8 +859,7 @@ def test_ptp(self):
         ser = Series(arr)
         ptp_np = np.ptp(arr)
         ptp_pd = np.ptp(ser)
-
-        assert np.array_equal(ptp_pd, ptp_np)
+        assert ptp_pd == ptp_np
 
     def test_repeat(self):
         s = Series(np.random.randn(3), index=["a", "b", "c"])