diff --git a/test/unit/authnz/test_psa_authnz.py b/test/unit/authnz/test_psa_authnz.py
index 9d1daa19c6a..dbc41917783 100644
--- a/test/unit/authnz/test_psa_authnz.py
+++ b/test/unit/authnz/test_psa_authnz.py
@@ -667,74 +667,3 @@ def test_authenticate_with_real_backend_does_not_accumulate_extra_scopes(psa_aut
         assert list(backend_class.DEFAULT_SCOPE or []) == expected_default_scope
     finally:
         backend_class.DEFAULT_SCOPE = original_default_scope
-
-
-def make_google_secondary_auth_psa_authnz(extra_scopes=None):
-    """Build a PSAAuthnz configured for the Google provider with secondary AuthZ."""
-    oidc_backend_config = {
-        "client_id": "gxyclient",
-        "client_secret": "dummyclientsecret",
-        "redirect_uri": "https://galaxy.example.com/authnz/callback",
-    }
-    if extra_scopes is not None:
-        oidc_backend_config["extra_scopes"] = extra_scopes
-    mock_app = MagicMock()
-    mock_app.config = SimpleNamespace(
-        oidc_auth_pipeline=None,
-        oidc_auth_pipeline_extra=None,
-        fixed_delegated_auth=False,
-    )
-    return PSAAuthnz(
-        provider="google",
-        oidc_config={
-            "SECONDARY_AUTH_PROVIDER": "secondary-provider",
-            "SECONDARY_AUTH_ENDPOINT": "https://secondary.example.com/auth",
-        },
-        oidc_backend_config=oidc_backend_config,
-        app_config=mock_app.config,
-    )
-
-
-def test_google_secondary_auth_requests_cloud_platform_scope_without_mutating_default():
-    """
-    When Google secondary AuthZ is configured, the cloud-platform scope is
-    requested via the SCOPE setting (combined with DEFAULT_SCOPE by social-core),
-    so it is sent exactly once per login and the shared class-level DEFAULT_SCOPE
-    is never mutated.
-    """
-    cloud_platform_scope = "https://www.googleapis.com/auth/cloud-platform"
-    backend_class = module_member(BACKENDS["google"])
-    original_default_scope = backend_class.DEFAULT_SCOPE
-    expected_default_scope = list(original_default_scope or [])
-    observed_scopes = []
-
-    psa_authnz = make_google_secondary_auth_psa_authnz(extra_scopes=["offline_access"])
-
-    def fake_load_backend(strategy, redirect_uri):
-        # Real _load_backend builds a fresh backend instance on every call.
-        return backend_class(strategy, redirect_uri)
-
-    def fake_do_auth(backend):
-        observed_scopes.append(backend.get_scope())
-        return MagicMock()
-
-    try:
-        with (
-            patch("galaxy.authnz.psa_authnz.on_the_fly_config"),
-            patch.object(psa_authnz, "_load_backend", side_effect=fake_load_backend),
-            patch("galaxy.authnz.psa_authnz.do_auth", side_effect=fake_do_auth),
-        ):
-            psa_authnz.authenticate(make_mock_trans())
-            psa_authnz.authenticate(make_mock_trans())
-
-        for scope in observed_scopes:
-            # cloud-platform requested exactly once, alongside the configured extra scope
-            assert scope.count(cloud_platform_scope) == 1
-            assert "offline_access" in scope
-        # identical across logins (no accumulation)...
-        assert observed_scopes[0] == observed_scopes[1]
-        # ...and the shared class-level default scope is left untouched.
-        assert backend_class.DEFAULT_SCOPE is original_default_scope
-        assert list(backend_class.DEFAULT_SCOPE or []) == expected_default_scope
-    finally:
-        backend_class.DEFAULT_SCOPE = original_default_scope