Auto merge of #85908 - cjgillot:private-dep-query, r=Aaron1011

Make is_private_dep a query.

Part of #85153

r? `@Aaron1011`

compiler/rustc_middle/src/ty/context.rs

@@ -1264,12 +1264,6 @@ impl<'tcx> TyCtxt<'tcx> {
         }
     }
 
-    /// Returns whether or not the crate with CrateNum 'cnum'
-    /// is marked as a private dependency
-    pub fn is_private_dep(self, cnum: CrateNum) -> bool {
-        if cnum == LOCAL_CRATE { false } else { self.cstore.crate_is_private_dep_untracked(cnum) }
-    }
-
     #[inline]
     pub fn def_path_hash(self, def_id: DefId) -> rustc_hir::definitions::DefPathHash {
         if let Some(def_id) = def_id.as_local() {