Remove re-export.

compiler/rustc_middle/src/ty/util.rs

@@ -1,6 +1,5 @@
 //! Miscellaneous type-system utilities that are too small to deserve their own modules.
 
-use crate::ich::NodeIdHashingMode;
 use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use crate::ty::fold::TypeFolder;
 use crate::ty::layout::IntegerExt;
@@ -18,6 +17,7 @@ use rustc_hir as hir;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefId;
 use rustc_macros::HashStable;
+use rustc_query_system::ich::NodeIdHashingMode;
 use rustc_span::DUMMY_SP;
 use rustc_target::abi::{Integer, Size, TargetDataLayout};
 use smallvec::SmallVec;