Removed some cruft added for macro expansion serialization.

Author: ibabushkin

src/librustc/middle/cstore.rs

@@ -253,8 +253,6 @@ pub struct ExternBodyNestedBodies {
 pub trait CrateStore {
     fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>;
 
-    fn ensure_hygiene_data_loaded(&self);
-
     // access to the metadata loader
     fn metadata_loader(&self) -> &MetadataLoader;
 
@@ -327,7 +325,6 @@ pub struct DummyCrateStore;
 impl CrateStore for DummyCrateStore {
     fn crate_data_as_rc_any(&self, krate: CrateNum) -> Rc<Any>
         { bug!("crate_data_as_rc_any") }
-    fn ensure_hygiene_data_loaded(&self) { bug!("ensure_hygiene_data_loaded") }
     // item info
     fn visibility_untracked(&self, def: DefId) -> ty::Visibility { bug!("visibility") }
     fn item_generics_cloned_untracked(&self, def: DefId) -> ty::Generics

src/librustc_metadata/cstore_impl.rs

@@ -350,12 +350,6 @@ impl CrateStore for cstore::CStore {
         self.get_crate_data(krate)
     }
 
-    fn ensure_hygiene_data_loaded(&self) {
-        self.iter_crate_data(|_, metadata| {
-            (*metadata).imported_hygiene_data();
-        });
-    }
-
     fn metadata_loader(&self) -> &MetadataLoader {
         &*self.metadata_loader
     }

src/librustc_metadata/encoder.rs

@@ -351,8 +351,6 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
     }
 
     fn encode_hygiene_data(&mut self) -> Lazy<hygiene::HygieneDataMap> {
-        // FIXME(twk): remove the `ensure_hygiene_data_loaded` method
-        // self.tcx.sess.cstore.ensure_hygiene_data_loaded();
         let data = hygiene::HygieneData::safe_with(|data| data.to_map());
         self.lazy(&data)
     }