Use Matplotlib built-in converters for python date(time)s

Author: dstansby

pandas/plotting/_matplotlib/converter.py

@@ -47,10 +47,6 @@ def get_pairs():
     pairs = [
         (tslibs.Timestamp, DatetimeConverter),
         (Period, PeriodConverter),
-        (pydt.datetime, DatetimeConverter),
-        (pydt.date, DatetimeConverter),
-        (pydt.time, TimeConverter),
-        (np.datetime64, DatetimeConverter),
     ]
     return pairs