Py3: Remove subclassing from object

Python 2 had old style and new style classes. Python 3 has only new
style classes. There is no point to subclass from object any more.

See: https://pagure.io/freeipa/issue/7715
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>

ipaplatform/redhat/authconfig.py

@@ -38,7 +38,7 @@ def get_auth_tool():
 
 
 @six.add_metaclass(abc.ABCMeta)
-class RedHatAuthToolBase(object):
+class RedHatAuthToolBase:
 
     @abc.abstractmethod
     def configure(self, sssd, mkhomedir, statestore, sudo=True):

ipaplatform/redhat/tasks.py

@@ -69,7 +69,7 @@ def selinux_enabled():
 
 
 @total_ordering
-class IPAVersion(object):
+class IPAVersion:
     _rpmvercmp_func = None
 
     @classmethod