polkadot: remove grandpa pause support (#2511)

This was never used and we probably don't need it anyway.

polkadot/cli/src/cli.rs

@@ -82,16 +82,6 @@ pub struct RunCmd {
 	#[arg(long = "force-rococo")]
 	pub force_rococo: bool,
 
-	/// Setup a GRANDPA scheduled voting pause.
-	///
-	/// This parameter takes two values, namely a block number and a delay (in blocks).
-	///
-	/// After the given block number is finalized the GRANDPA voter will temporarily
-	/// stop voting for new blocks until the given delay has elapsed (i.e. until a
-	/// block at height `pause_block + delay` is imported).
-	#[arg(long = "grandpa-pause", num_args = 2)]
-	pub grandpa_pause: Vec<u32>,
-
 	/// Disable the BEEFY gadget.
 	///
 	/// Currently enabled by default on 'Rococo', 'Wococo' and 'Versi'.

polkadot/cli/src/command.rs

@@ -215,12 +215,6 @@ where
 
 	set_default_ss58_version(chain_spec);
 
-	let grandpa_pause = if cli.run.grandpa_pause.is_empty() {
-		None
-	} else {
-		Some((cli.run.grandpa_pause[0], cli.run.grandpa_pause[1]))
-	};
-
 	if chain_spec.is_kusama() {
 		info!("----------------------------");
 		info!("This chain is not in any way");
@@ -257,7 +251,6 @@ where
 			config,
 			service::NewFullParams {
 				is_parachain_node: service::IsParachainNode::No,
-				grandpa_pause,
 				enable_beefy,
 				force_authoring_backoff: cli.run.force_authoring_backoff,
 				jaeger_agent,