1 files changed, 0 insertions, 85 deletions
diff --git a/synapse/api/events/utils.py b/synapse/api/events/utils.py
deleted file mode 100644
index d6019d56eb..0000000000
--- a/synapse/api/events/utils.py
+++ /dev/null
@@ -1,85 +0,0 @@
-# -*- coding: utf-8 -*-
-# Copyright 2014 OpenMarket Ltd
-#
-# 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 .room import (
-    RoomMemberEvent, RoomJoinRulesEvent, RoomPowerLevelsEvent,
-    RoomAliasesEvent, RoomCreateEvent,
-)
-
-
-def prune_event(event):
-    """ Returns a pruned version of the given event, which removes all keys we
-    don't know about or think could potentially be dodgy.
-
-    This is used when we "redact" an event. We want to remove all fields that
-    the user has specified, but we do want to keep necessary information like
-    type, state_key etc.
-    """
-    event_type = event.type
-
-    allowed_keys = [
-        "event_id",
-        "user_id",
-        "room_id",
-        "hashes",
-        "signatures",
-        "content",
-        "type",
-        "state_key",
-        "depth",
-        "prev_events",
-        "prev_state",
-        "auth_events",
-        "origin",
-        "origin_server_ts",
-    ]
-
-    new_content = {}
-
-    def add_fields(*fields):
-        for field in fields:
-            if field in event.content:
-                new_content[field] = event.content[field]
-
-    if event_type == RoomMemberEvent.TYPE:
-        add_fields("membership")
-    elif event_type == RoomCreateEvent.TYPE:
-        add_fields("creator")
-    elif event_type == RoomJoinRulesEvent.TYPE:
-        add_fields("join_rule")
-    elif event_type == RoomPowerLevelsEvent.TYPE:
-        add_fields(
-            "users",
-            "users_default",
-            "events",
-            "events_default",
-            "events_default",
-            "state_default",
-            "ban",
-            "kick",
-            "redact",
-        )
-    elif event_type == RoomAliasesEvent.TYPE:
-        add_fields("aliases")
-
-    allowed_fields = {
-        k: v
-        for k, v in event.get_full_dict().items()
-        if k in allowed_keys
-    }
-
-    allowed_fields["content"] = new_content
-
-    return type(event)(**allowed_fields)