ircd:Ⓜ️ Simplify/remove homeserver::rooms related.

include/ircd/m/homeserver.h

@@ -56,12 +56,6 @@ struct ircd::m::homeserver
 	/// Database
 	std::shared_ptr<dbs::init> database;
 
-	/// List of special room specific to this homeserver. This includes the
-	/// fundamental !ircd room, !conf room, etc. This list generally doesn't
-	/// change after construction, but it's mutable to allow modules to add
-	/// new rooms to the list.
-	std::set<m::room::id::buf> rooms;
-
 	/// An inscription of @ircd:network.name to root various references to
 	/// a user representing the server.
 	m::user::id::buf self;

matrix/rooms_summary.cc

@@ -34,9 +34,9 @@ ircd::m::rooms::summary::create_public_room
 			m::my(at<"origin"_>(event))
 		};
 
-		const auto &public_room_id
+		const m::room::id::buf public_room_id
 		{
-			*my.rooms.emplace("public", origin(my)).first
+			"public", origin(my)
 		};
 
 		m::create(public_room_id, me());

modules/m_room_aliases.cc

@@ -40,7 +40,6 @@ ircd::m::create_alias_room_hookfn
 		{ "room_id",     "!ircd"          },
 		{ "type",        "m.room.create"  },
 	},
-
 	[](const m::event &event, m::vm::eval &)
 	{
 		auto &my
@@ -48,9 +47,9 @@ ircd::m::create_alias_room_hookfn
 			m::my(at<"origin"_>(event))
 		};
 
-		const auto &alias_room_id
+		const m::room::id::buf alias_room_id
 		{
-			*my.rooms.emplace("alias", origin(my)).first
+			"alias", origin(my)
 		};
 
 		create(alias_room_id, my.self);