V4 documentation still mention pull-right and pull-left classes

Created by: arnaudruffin

The current v4 documentation on v4-dev branch states that

Two similar non-responsive mixins (pull-left and pull-right) are also available.

(see https://github.com/twbs/bootstrap/blob/v4-dev/docs/components/utilities.md) for instance)

I understand that the absence of pull-right and pull-left classes in V4 is intentional (see #20286 (closed) for instance).

So maybe the documentation should be fixed?