Revert "Reland "Ensure that sites can still communicate after me...""

This reverts commit 99bc031.

Change-Id: I75be4965d1256ad17ea05f130f560b6319ba64a9

tests/composition/message_broker/test_message_broker.py

@@ -12,7 +12,6 @@
 from tests.testlib.site import Site
 
 from tests.composition.message_broker.utils import (
-    assert_message_exchange_not_working,
     assert_message_exchange_working,
     broker_pong,
     broker_stopped,
@@ -102,23 +101,3 @@ def test_message_broker_remote_remote_p2p(
             broker_stopped(central_site),
         ):
             check_broker_ping(remote_site_2, remote_site.id)
-
-    def test_rabbitmq_port_change(self, central_site: Site, remote_site: Site) -> None:
-        """Ensure that sites can still communicate after the message broker port is changed"""
-        site_connection = central_site.openapi.show_site(remote_site.id)["extensions"]
-        site_connection_port = int(
-            site_connection["configuration_connection"]["message_broker_port"]
-        )
-        assert site_connection_port == remote_site.message_broker_port
-        next_port = _next_free_port(remote_site, "RABBITMQ_PORT", str(site_connection_port + 1))
-
-        remote_site.set_config("RABBITMQ_PORT", str(next_port), with_restart=True)
-
-        site_connection["configuration_connection"]["message_broker_port"] = str(next_port)
-        central_site.openapi.update_site(remote_site.id, site_connection)
-
-        # ensure changes are not in effect before activated
-        assert_message_exchange_not_working(central_site, remote_site)
-        central_site.openapi.activate_changes_and_wait_for_completion()
-
-        assert_message_exchange_working(central_site, remote_site)