Remove unnecessary object from class definitions

In Python 3, all classes are new-style classes. The object in the
definition is redundant and unnecessary.

1 files changed, 1 insertions, 1 deletions

diff --git a/sphinx/roles.py b/sphinx/roles.py
index 453eb5aa0..457c7465a 100644
--- a/sphinx/roles.py
+++ b/sphinx/roles.py
@@ -45,7 +45,7 @@ generic_docroles = {
 
 # -- generic cross-reference role ----------------------------------------------
 
-class XRefRole(object):
+class XRefRole:
     """
     A generic cross-referencing role.  To create a callable that can be used as
     a role function, create an instance of this class.