Remove unnecessary is_local() check

Author: Aaron1011

src/librustc_privacy/lib.rs

@@ -1536,14 +1536,13 @@ impl<'a, 'tcx: 'a> SearchInterfaceForPrivateItemsVisitor<'a, 'tcx> {
     /// An item is 'leaked' from a private dependency if all
     /// of the following are true:
     /// 1. It's contained within a public type
-    /// 2. It does not come from a crate marked as public
+    /// 2. It comes from a private crate
     fn leaks_private_dep(&self, item_id: DefId) -> bool {
         // Don't do any leak checking if no private crates were specified
         if self.private_crates.is_empty() {
             return false
         }
         let ret = self.required_visibility == ty::Visibility::Public &&
-            !item_id.is_local() &&
             self.private_crates.contains(&item_id.krate);