Fixed test implementation to be compatible with PEP8

Author: userlocalhost

api_v1/tests/entry/test_api_search_chain.py

@@ -2,7 +2,6 @@
 
 from airone.lib.test import AironeViewTest
 from airone.lib.types import AttrTypeValue
-
 from api_v1.entry import serializer
 
 
@@ -870,7 +869,7 @@ def test_basic_backward_and_forward_reference(self):
         )
 
     def test_nested_backward_reference(self):
-        entry_network1 = self.add_entry(
+        self.add_entry(
             self.user,
             "192.168.10.0/24",
             self.entity_network,