Delete outdated comment in logging module (#31117)

The root logger is now accessible via its name, see
#15077

Co-authored-by: Jelle Zijlstra <[email protected]>

Author: thomie

Lib/logging/__init__.py

@@ -1777,8 +1777,6 @@ def __repr__(self):
         return '<%s %s (%s)>' % (self.__class__.__name__, self.name, level)
 
     def __reduce__(self):
-        # In general, only the root logger will not be accessible via its name.
-        # However, the root logger's class has its own __reduce__ method.
         if getLogger(self.name) is not self:
             import pickle
             raise pickle.PicklingError('logger cannot be pickled')