Remove deprecated m.room.aliases references (#2759)

src/@types/event.ts

@@ -33,10 +33,6 @@ export enum EventType {
     RoomGuestAccess = "m.room.guest_access",
     RoomServerAcl = "m.room.server_acl",
     RoomTombstone = "m.room.tombstone",
-    /**
-     * @deprecated Should not be used.
-     */
-    RoomAliases = "m.room.aliases", // deprecated https://matrix.org/docs/spec/client_server/r0.6.1#historical-events
 
     SpaceChild = "m.space.child",
     SpaceParent = "m.space.parent",

src/models/event.ts

@@ -1585,7 +1585,6 @@ const REDACT_KEEP_CONTENT_MAP = {
         'kick': 1, 'redact': 1, 'state_default': 1,
         'users': 1, 'users_default': 1,
     },
-    [EventType.RoomAliases]: { 'aliases': 1 },
 };
 
 /**

src/models/room.ts

@@ -1369,35 +1369,6 @@ export class Room extends ReadReceipt<RoomEmittedEvents, RoomEventHandlerMap> {
         return this.currentState.getStateEvents(EventType.RoomAvatar, "")?.getContent()?.url || null;
     }
 
-    /**
-     * Get the aliases this room has according to the room's state
-     * The aliases returned by this function may not necessarily
-     * still point to this room.
-     * @return {array} The room's alias as an array of strings
-     * @deprecated this uses m.room.aliases events, replaced by Room::getAltAliases()
-     */
-    public getAliases(): string[] {
-        const aliasStrings: string[] = [];
-
-        const aliasEvents = this.currentState.getStateEvents(EventType.RoomAliases);
-        if (aliasEvents) {
-            for (const aliasEvent of aliasEvents) {
-                if (Array.isArray(aliasEvent.getContent().aliases)) {
-                    const filteredAliases = aliasEvent.getContent<{ aliases: string[] }>().aliases.filter(a => {
-                        if (typeof(a) !== "string") return false;
-                        if (a[0] !== '#') return false;
-                        if (!a.endsWith(`:${aliasEvent.getStateKey()}`)) return false;
-
-                        // It's probably valid by here.
-                        return true;
-                    });
-                    aliasStrings.push(...filteredAliases);
-                }
-            }
-        }
-        return aliasStrings;
-    }
-
     /**
      * Get this room's canonical alias
      * The alias returned by this function may not necessarily