remove cfg-check in ci tool (#15063)

# Objective

- Missed in #14477
- This commands is not used anymore

## Solution

- Remove it

tools/ci/src/ci.rs

@@ -75,7 +75,6 @@ impl CI {
                 cmds.append(&mut commands::DocCheckCommand::default().prepare(sh, flags));
                 cmds.append(&mut commands::DocTestCommand::default().prepare(sh, flags));
                 cmds.append(&mut commands::CompileCheckCommand::default().prepare(sh, flags));
-                cmds.append(&mut commands::CfgCheckCommand::default().prepare(sh, flags));
                 cmds.append(&mut commands::CompileFailCommand::default().prepare(sh, flags));
                 cmds.append(&mut commands::BenchCheckCommand::default().prepare(sh, flags));
                 cmds.append(&mut commands::ExampleCheckCommand::default().prepare(sh, flags));
@@ -101,7 +100,6 @@ enum Commands {
     DocCheck(commands::DocCheckCommand),
     DocTest(commands::DocTestCommand),
     CompileCheck(commands::CompileCheckCommand),
-    CfgCheck(commands::CfgCheckCommand),
     CompileFail(commands::CompileFailCommand),
     BenchCheck(commands::BenchCheckCommand),
     ExampleCheck(commands::ExampleCheckCommand),
@@ -121,7 +119,6 @@ impl Prepare for Commands {
             Commands::DocCheck(subcommand) => subcommand.prepare(sh, flags),
             Commands::DocTest(subcommand) => subcommand.prepare(sh, flags),
             Commands::CompileCheck(subcommand) => subcommand.prepare(sh, flags),
-            Commands::CfgCheck(subcommand) => subcommand.prepare(sh, flags),
             Commands::CompileFail(subcommand) => subcommand.prepare(sh, flags),
             Commands::BenchCheck(subcommand) => subcommand.prepare(sh, flags),
             Commands::ExampleCheck(subcommand) => subcommand.prepare(sh, flags),

tools/ci/src/commands/cfg_check.rs

@@ -1,18 +0,0 @@
-use crate::{Flag, Prepare, PreparedCommand};
-use argh::FromArgs;
-use xshell::cmd;
-
-/// Checks that the project compiles using the nightly compiler with cfg checks enabled.
-#[derive(FromArgs, Default)]
-#[argh(subcommand, name = "cfg-check")]
-pub struct CfgCheckCommand {}
-
-impl Prepare for CfgCheckCommand {
-    fn prepare<'a>(&self, sh: &'a xshell::Shell, _flags: Flag) -> Vec<PreparedCommand<'a>> {
-        vec![PreparedCommand::new::<Self>(
-            cmd!(sh, "cargo +nightly check -Zcheck-cfg --workspace"),
-            "Please fix failing cfg checks in output above.",
-        )
-        .with_env_var("RUSTFLAGS", "-D warnings")]
-    }
-}

tools/ci/src/commands/mod.rs

@@ -1,5 +1,4 @@
 pub use bench_check::*;
-pub use cfg_check::*;
 pub use clippy::*;
 pub use compile::*;
 pub use compile_check::*;
@@ -14,7 +13,6 @@ pub use test::*;
 pub use test_check::*;
 
 mod bench_check;
-mod cfg_check;
 mod clippy;
 mod compile;
 mod compile_check;