Remove deprecated TryRuntime subcommand (#4017)

Completes the removal of `try-runtime-cli` logic from `polkadot-sdk`.

templates/parachain/node/src/cli.rs

@@ -37,11 +37,6 @@ pub enum Subcommand {
 	/// The pallet benchmarking moved to the `pallet` sub-command.
 	#[command(subcommand)]
 	Benchmark(frame_benchmarking_cli::BenchmarkCmd),
-
-	/// Try-runtime has migrated to a standalone
-	/// [CLI](<https://github.com/paritytech/try-runtime-cli>). The subcommand exists as a stub and
-	/// deprecation notice. It will be removed entirely some time after January 2024.
-	TryRuntime,
 }
 
 const AFTER_HELP_EXAMPLE: &str = color_print::cstr!(

templates/parachain/node/src/command.rs

@@ -216,7 +216,6 @@ pub fn run() -> Result<()> {
 				_ => Err("Benchmarking sub-command unsupported".into()),
 			}
 		},
-		Some(Subcommand::TryRuntime) => Err("The `try-runtime` subcommand has been migrated to a standalone CLI (https://github.com/paritytech/try-runtime-cli). It is no longer being maintained here and will be removed entirely some time after January 2024. Please remove this subcommand from your runtime and use the standalone CLI.".into()),
 		None => {
 			let runner = cli.create_runner(&cli.run.normalize())?;
 			let collator_options = cli.run.collator_options();