Remove bridges subtree

bridges/primitives/xcm-bridge-hub/src/lib.rs

@@ -1,24 +0,0 @@
-// Copyright 2019-2021 Parity Technologies (UK) Ltd.
-// This file is part of Parity Bridges Common.
-
-// Parity Bridges Common is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// Parity Bridges Common is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with Parity Bridges Common.  If not, see <http://www.gnu.org/licenses/>.
-
-//! Primitives of the xcm-bridge-hub pallet.
-
-#![warn(missing_docs)]
-#![cfg_attr(not(feature = "std"), no_std)]
-
-/// Encoded XCM blob. We expect the bridge messages pallet to use this blob type for both inbound
-/// and outbound payloads.
-pub type XcmAsPlainPayload = sp_std::vec::Vec<u8>;