Remove repeated docstring from inherited methods

[ramirezfranciscof]

There are a couple of classes that have a repeated/identical docstring on both the parent class and the child class method. Since now the docstrings are inherited, perhaps it would be better to remove the ones from the child class if they are not adding anything new or different from the original method they are overriding. The main advantage of this is reducing the efforts of maintaining the (internal) documentation of the code updated. Any cons to consider?

[sphuber]

Main downside is that if you now look at a child class, you don't have the docstring available and you have to find the parent class. This is often not that difficult, but if a class has a complex inheritance hierarchy it may not be so trivial. Still, I agree that maintenance would be simplified although we have to make sure that docstrings are added once the behavior of a subclass differs from the parent class.