Dont re-pin total seconds as it is already implemented

Author: jbrockmendel

pandas/_libs/tslib.pyx

@@ -3892,8 +3892,9 @@ for field in fields:
 _nat_methods = ['date', 'now', 'replace', 'to_pydatetime',
                 'today', 'round', 'floor', 'ceil', 'tz_convert',
                 'tz_localize']
-_nan_methods = ['weekday', 'isoweekday', 'total_seconds']
-_implemented_methods = ['to_datetime', 'to_datetime64', 'isoformat']
+_nan_methods = ['weekday', 'isoweekday']
+_implemented_methods = [
+    'to_datetime', 'to_datetime64', 'isoformat', 'total_seconds']
 _implemented_methods.extend(_nat_methods)
 _implemented_methods.extend(_nan_methods)