Remove unused OwnerNode::ident method.

Author: nnethercote

compiler/rustc_hir/src/hir.rs

@@ -4332,16 +4332,6 @@ pub enum OwnerNode<'hir> {
 }
 
 impl<'hir>OwnerNode<'hir>{
-pubfnident(&self) -> Option<Ident>{
-matchself{
-OwnerNode::Item(Item{ ident, .. })
- | OwnerNode::ForeignItem(ForeignItem{ ident, .. })
- | OwnerNode::ImplItem(ImplItem{ ident, .. })
- | OwnerNode::TraitItem(TraitItem{ ident, .. }) => Some(*ident),
-OwnerNode::Crate(..) | OwnerNode::Synthetic => None,
-}
-}
-
 pubfnspan(&self) -> Span{
 matchself{
 OwnerNode::Item(Item{ span, .. })