Cleanup unecessary code

Author: Aaron1011

src/librustc/session/config.rs

@@ -1653,13 +1653,6 @@ pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
                                     for the compiler to emit",
             "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
         ),
-        opt::multi_s(
-            "",
-            "extern-public",
-            "Comma separated list of crates to consider 'public'
-                                     for linting purposes",
-            "CRATES",
-        ),
         opt::opt_s(
             "",
             "crate-name",
@@ -1942,9 +1935,6 @@ pub fn build_session_options_and_crate_config(
         );
     }
 
-
-
-
     let mut output_types = BTreeMap::new();
     if !debugging_opts.parse_only {
         for list in matches.opt_strs("emit") {

src/librustc_privacy/lib.rs

@@ -1538,14 +1538,9 @@ impl<'a, 'tcx: 'a> SearchInterfaceForPrivateItemsVisitor<'a, 'tcx> {
     /// 1. It's contained within a public type
     /// 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 &&
             self.private_crates.contains(&item_id.krate);
 
-
         debug!("leaks_private_dep(item_id={:?})={}", item_id, ret);
         return ret;
     }