Fix PT021 pytest-fixture-finalizer-callback

Author: TimPansino

tests/testing_support/fixtures.py

@@ -247,12 +247,9 @@ def _collector_agent_registration_fixture(request):
             except Exception:
                 _logger.exception("Unable to record deployment marker.")
 
-        def finalize():
-            shutdown_agent()
+        yield application
 
-        request.addfinalizer(finalize)
-
-        return application
+        shutdown_agent()
 
     return _collector_agent_registration_fixture