Remove outdated comment

Author: notriddle

src/librustdoc/html/static/js/search.js

@@ -3742,7 +3742,6 @@ class DocSearch {
                             this.getName(id),
                             this.getAliasTarget(id),
                         ]);
-                        // the index stores normalized names, but aliases are matched by exact names
                         if (name !== null &&
                             alias !== null &&
                             !idDuplicates.has(id) &&