Rollup merge of #129774 - nnethercote:rm-extern-crate-tracing-remainder, r=GuillaumeGomez

Remove `#[macro_use] extern crate tracing` from rustdoc and rustfmt

A follow-up to #129767 and earlier PRs doing this for `rustc_*` crates.

r? ```@GuillaumeGomez```

2 files changed, 2 insertions, 0 deletions

diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs
index 90942d87f72..c5e2b33ccf8 100644
--- a/src/librustdoc/formats/cache.rs
+++ b/src/librustdoc/formats/cache.rs
@@ -4,6 +4,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet};
 use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_span::Symbol;
+use tracing::debug;
 
 use crate::clean::types::ExternalLocation;
 use crate::clean::{self, ExternalCrate, ItemId, PrimitiveType};
diff --git a/src/librustdoc/formats/renderer.rs b/src/librustdoc/formats/renderer.rs
index 2535668b83f..cc57dca86c3 100644
--- a/src/librustdoc/formats/renderer.rs
+++ b/src/librustdoc/formats/renderer.rs
@@ -1,4 +1,5 @@
 use rustc_middle::ty::TyCtxt;
+use tracing::debug;
 
 use crate::clean;
 use crate::config::RenderOptions;