Remove errant note about changing the name of existing roles.

See: #2622 (comment)

+label: docsite_pr

docs/docsite/rst/contributing/creating_role.rst

@@ -185,12 +185,6 @@ To override the default name, set the ``role_name`` attribute in the role ``meta
     Role names are limited to lowercase word characters (i.e., a-z, 0-9) and '_'. No special characters are allowed, including '.',
     '-', and space. During import, any '.' and '-' characters contained in the repository name or role_name will be replaced with '_'.
 
-.. note::
-
-    Setting the value of *role_name* on an existing role will change the name of the role by converting it
-    to lowercase, and translating '-'  and '.' to '_'. If the name of an existing role should not be
-    altered, don't set the value of *role_name*.
-
 .. note::
 
     `role_name` is not used at all if the role is installed using its Git URL. Instead, the name of the repo is used.