Remove #[macro_use] extern crate tracing from rustc_const_eval.

compiler/rustc_const_eval/src/interpret/intern.rs

@@ -23,6 +23,7 @@ use rustc_middle::query::TyCtxtAt;
 use rustc_middle::ty::layout::TyAndLayout;
 use rustc_span::def_id::LocalDefId;
 use rustc_span::sym;
+use tracing::{instrument, trace};
 
 use super::{err_ub, AllocId, Allocation, InterpCx, MPlaceTy, Machine, MemoryKind, PlaceTy};
 use crate::const_eval;