Rollup merge of rust-lang#142116 - jieyouxu:fix-tracing, r=Mark-Simulacrum

Fix bootstrap tracing imports

Author: GuillaumeGomez

src/bootstrap/src/core/config/config.rs

@@ -28,8 +28,6 @@ use build_helper::git::{GitConfig, PathFreshness, check_path_modifications, outp
 use serde::Deserialize;
 #[cfg(feature = "tracing")]
 use tracing::{instrument, span};
-#[cfg(feature = "tracing")]
-use tracing::{instrument, span};
 
 use crate::core::build_steps::llvm;
 use crate::core::build_steps::llvm::LLVM_INVALIDATION_PATHS;

src/bootstrap/src/core/config/mod.rs

@@ -39,8 +39,6 @@ pub use toml::BUILDER_CONFIG_FILENAME;
 pub use toml::change_id::ChangeId;
 pub use toml::rust::LldMode;
 pub use toml::target::Target;
-#[cfg(feature = "tracing")]
-use tracing::{instrument, span};
 
 use crate::Display;
 use crate::str::FromStr;