3 files changed, 1 insertions, 15 deletions
diff --git a/src/libsyntax/parse/lexer/mod.rs b/src/libsyntax/parse/lexer/mod.rs
index 590506566dd..0584cd5a3df 100644
--- a/src/libsyntax/parse/lexer/mod.rs
+++ b/src/libsyntax/parse/lexer/mod.rs
@@ -1890,7 +1890,6 @@ mod tests {
             missing_fragment_specifiers: Lock::new(FxHashSet::default()),
             raw_identifier_spans: Lock::new(Vec::new()),
             registered_diagnostics: Lock::new(ErrorMap::new()),
-            non_modrs_mods: Lock::new(vec![]),
             buffered_lints: Lock::new(vec![]),
         }
     }
diff --git a/src/libsyntax/parse/mod.rs b/src/libsyntax/parse/mod.rs
index fd66bf55a74..ac972f20f94 100644
--- a/src/libsyntax/parse/mod.rs
+++ b/src/libsyntax/parse/mod.rs
@@ -52,9 +52,6 @@ pub struct ParseSess {
     pub raw_identifier_spans: Lock<Vec<Span>>,
     /// The registered diagnostics codes
     crate registered_diagnostics: Lock<ErrorMap>,
-    // Spans where a `mod foo;` statement was included in a non-mod.rs file.
-    // These are used to issue errors if the non_modrs_mods feature is not enabled.
-    pub non_modrs_mods: Lock<Vec<(ast::Ident, Span)>>,
     /// Used to determine and report recursive mod inclusions
     included_mod_stack: Lock<Vec<PathBuf>>,
     source_map: Lrc<SourceMap>,
@@ -81,7 +78,6 @@ impl ParseSess {
             registered_diagnostics: Lock::new(ErrorMap::new()),
             included_mod_stack: Lock::new(vec![]),
             source_map,
-            non_modrs_mods: Lock::new(vec![]),
             buffered_lints: Lock::new(vec![]),
         }
     }
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index d90ec4ea081..b4fc9c2c6fc 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -6591,16 +6591,7 @@ impl<'a> Parser<'a> {
         }
 
         let relative = match self.directory.ownership {
-            DirectoryOwnership::Owned { relative } => {
-                // Push the usage onto the list of non-mod.rs mod uses.
-                // This is used later for feature-gate error reporting.
-                if let Some(cur_file_ident) = relative {
-                    self.sess
-                        .non_modrs_mods.borrow_mut()
-                        .push((cur_file_ident, id_sp));
-                }
-                relative
-            },
+            DirectoryOwnership::Owned { relative } => relative,
             DirectoryOwnership::UnownedViaBlock |
             DirectoryOwnership::UnownedViaMod(_) => None,
         };