Remove uncles related code (#13216)

The code was added without any clear usage. The inherent for example is not benchmarked and not used.

substrate/client/consensus/uncles/Cargo.toml

@@ -1,19 +0,0 @@
-[package]
-name = "sc-consensus-uncles"
-version = "0.10.0-dev"
-authors = ["Parity Technologies <admin@parity.io>"]
-description = "Generic uncle inclusion utilities for consensus"
-edition = "2021"
-license = "GPL-3.0-or-later WITH Classpath-exception-2.0"
-homepage = "https://substrate.io"
-repository = "https://github.com/paritytech/substrate/"
-readme = "README.md"
-
-[package.metadata.docs.rs]
-targets = ["x86_64-unknown-linux-gnu"]
-
-[dependencies]
-thiserror = "1.0.30"
-sc-client-api = { version = "4.0.0-dev", path = "../../api" }
-sp-authorship = { version = "4.0.0-dev", path = "../../../primitives/authorship" }
-sp-runtime = { version = "7.0.0", path = "../../../primitives/runtime" }

substrate/client/consensus/uncles/README.md

@@ -1,3 +0,0 @@
-Uncles functionality for Substrate.
-
-License: GPL-3.0-or-later WITH Classpath-exception-2.0

substrate/client/consensus/uncles/src/lib.rs

@@ -1,45 +0,0 @@
-// This file is part of Substrate.
-
-// Copyright (C) 2019-2022 Parity Technologies (UK) Ltd.
-// SPDX-License-Identifier: GPL-3.0-or-later WITH Classpath-exception-2.0
-
-// This program 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.
-
-// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
-
-//! Uncles functionality for Substrate.
-
-use sc_client_api::ProvideUncles;
-use sp_runtime::{generic::BlockId, traits::Block as BlockT};
-
-#[derive(Debug, thiserror::Error)]
-pub enum Error<B: BlockT> {
-	#[error("Could not retrieve the block hash for block id: {0:?}")]
-	NoHashForBlockId(BlockId<B>),
-}
-
-/// Maximum uncles generations we may provide to the runtime.
-const MAX_UNCLE_GENERATIONS: u32 = 8;
-
-/// Create a new [`sp_authorship::InherentDataProvider`] at the given block.
-pub fn create_uncles_inherent_data_provider<B, C>(
-	client: &C,
-	parent: B::Hash,
-) -> Result<sp_authorship::InherentDataProvider<B::Header>, sc_client_api::blockchain::Error>
-where
-	B: BlockT,
-	C: ProvideUncles<B>,
-{
-	let uncles = client.uncles(parent, MAX_UNCLE_GENERATIONS.into())?;
-
-	Ok(sp_authorship::InherentDataProvider::new(uncles))
-}