this check is not needed

tests/test_discovery.py

diff --git a/tests/test_discovery.py b/tests/test_discovery.py
index e09382d..4e9e0b9 100644
--- a/tests/test_discovery.py
+++ b/tests/test_discovery.py
@@ -2145,8 +2145,6 @@
             "scopedAnimals",
         ]
 
-        if not HAS_UNIVERSE:
-            sorted_resource_keys.remove("_universe_domain")
 
         http = HttpMock(datafile("zoo.json"), {"status": "200"})
         zoo = build("zoo", "v1", http=http, static_discovery=False)