TST: Remove np.core usage (pandas-dev#55565)

Author: mroeschke

pandas/tests/frame/constructors/test_from_records.py

@@ -42,15 +42,15 @@ def test_from_records_with_datetimes(self):
         arrdata = [np.array([datetime(2005, 3, 1, 0, 0), None])]
         dtypes = [("EXPIRY", "<M8[ns]")]
 
-        recarray = np.core.records.fromarrays(arrdata, dtype=dtypes)
+        recarray = np.rec.fromarrays(arrdata, dtype=dtypes)
 
         result = DataFrame.from_records(recarray)
         tm.assert_frame_equal(result, expected)
 
         # coercion should work too
         arrdata = [np.array([datetime(2005, 3, 1, 0, 0), None])]
         dtypes = [("EXPIRY", "<M8[m]")]
-        recarray = np.core.records.fromarrays(arrdata, dtype=dtypes)
+        recarray = np.rec.fromarrays(arrdata, dtype=dtypes)
         result = DataFrame.from_records(recarray)
         # we get the closest supported unit, "s"
         expected["EXPIRY"] = expected["EXPIRY"].astype("M8[s]")