Remove #[macro_use] extern crate tracing from rustc_codegen_llvm.

compiler/rustc_codegen_llvm/src/coverageinfo/map_data.rs

@@ -9,6 +9,7 @@ use rustc_middle::mir::coverage::{
 };
 use rustc_middle::ty::Instance;
 use rustc_span::Symbol;
+use tracing::{debug, instrument};
 
 /// Holds all of the coverage mapping data associated with a function instance,
 /// collected during traversal of `Coverage` statements in the function's MIR.

compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs

@@ -14,6 +14,7 @@ use rustc_middle::mir;
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::def_id::DefIdSet;
 use rustc_span::Symbol;
+use tracing::debug;
 
 /// Generates and exports the Coverage Map.
 ///

compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs

@@ -17,6 +17,7 @@ use rustc_middle::mir::coverage::CoverageKind;
 use rustc_middle::ty::layout::HasTyCtxt;
 use rustc_middle::ty::Instance;
 use rustc_target::abi::{Align, Size};
+use tracing::{debug, instrument};
 
 use std::cell::RefCell;