Remove user-visible groups/communities code (#12553)

Makes it so that groups/communities no longer exist from a user-POV. E.g. we remove:

* All API endpoints (including Client-Server, Server-Server, and admin).
* Documented configuration options (and the experimental flag, which is now unused).
* Special handling during room upgrades.
* The `groups` section of the `/sync` response.

1 files changed, 0 insertions, 56 deletions

diff --git a/tests/rest/client/test_groups.py b/tests/rest/client/test_groups.py
deleted file mode 100644
index e067cf825c..0000000000
--- a/tests/rest/client/test_groups.py
+++ /dev/null
@@ -1,56 +0,0 @@
-# Copyright 2021 The Matrix.org Foundation C.I.C.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-from synapse.rest.client import groups, room
-
-from tests import unittest
-from tests.unittest import override_config
-
-
-class GroupsTestCase(unittest.HomeserverTestCase):
-    user_id = "@alice:test"
-    room_creator_user_id = "@bob:test"
-
-    servlets = [room.register_servlets, groups.register_servlets]
-
-    @override_config({"enable_group_creation": True})
-    def test_rooms_limited_by_visibility(self) -> None:
-        group_id = "+spqr:test"
-
-        # Alice creates a group
-        channel = self.make_request("POST", "/create_group", {"localpart": "spqr"})
-        self.assertEqual(channel.code, 200, msg=channel.text_body)
-        self.assertEqual(channel.json_body, {"group_id": group_id})
-
-        # Bob creates a private room
-        room_id = self.helper.create_room_as(self.room_creator_user_id, is_public=False)
-        self.helper.auth_user_id = self.room_creator_user_id
-        self.helper.send_state(
-            room_id, "m.room.name", {"name": "bob's secret room"}, tok=None
-        )
-        self.helper.auth_user_id = self.user_id
-
-        # Alice adds the room to her group.
-        channel = self.make_request(
-            "PUT", f"/groups/{group_id}/admin/rooms/{room_id}", {}
-        )
-        self.assertEqual(channel.code, 200, msg=channel.text_body)
-        self.assertEqual(channel.json_body, {})
-
-        # Alice now tries to retrieve the room list of the space.
-        channel = self.make_request("GET", f"/groups/{group_id}/rooms")
-        self.assertEqual(channel.code, 200, msg=channel.text_body)
-        self.assertEqual(
-            channel.json_body, {"chunk": [], "total_room_count_estimate": 0}
-        )