UI tests for "ID Range": Clean unnecessary Python2 compatible code constructions

https://pagure.io/freeipa/issue/7709

Reviewed-By: Christian Heimes <cheimes@redhat.com>

ipatests/test_webui/task_range.py

@@ -163,7 +163,7 @@ class range_tasks(UI_driver):
             self.assert_disabled("[name=ipasecondarybaserid]")
 
 
-class RangeAddFormData(object):
+class RangeAddFormData:
     """
     Class for storing and serializing of new ID Range form data.
 
@@ -206,7 +206,7 @@ class RangeAddFormData(object):
         return serialized
 
 
-class RangeModifyFormData(object):
+class RangeModifyFormData:
     """
     Class for storing and serializing of modified ID Range form data.
     """

ipatests/test_webui/test_range.py

@@ -39,7 +39,7 @@ PKEY = 'itest-range'
 class test_range(range_tasks):
 
     def setup(self):
-        super(test_range, self).setup()
+        super().setup()
         self.init_app()
         self.get_shifts()