Replace 'the the' with 'the'

pkg/front_end/lib/src/fasta/loader.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.loader;
 
 import 'dart:async' show Future;
 
 import 'dart:collection' show Queue;
 
@@ skipping 19 matching lines @@
   LibraryBuilder first;
 
   int byteCount = 0;
 
   Uri currentUriForCrashReporting;
 
   Loader(this.target);
 
   Ticker get ticker => target.ticker;
 
-  /// Look up a library builder by the the name [uri], or if such doesn't
+  /// Look up a library builder by the name [uri], or if such doesn't
   /// exist, create one. The canonical URI of the library is [uri], and its
   /// actual location is [fileUri].
   ///
   /// Canonical URIs have schemes like "dart", or "package", and the actual
   /// location is often a file URI.
   LibraryBuilder read(Uri uri, [Uri fileUri]) {
     firstSourceUri ??= uri;
     LibraryBuilder builder = builders.putIfAbsent(uri, () {
       if (fileUri == null) {
         switch (uri.scheme) {
@@ skipping 90 matching lines @@
   Builder getNativeAnnotation() => target.getNativeAnnotation(this);
 
   Builder getAbstractClassInstantiationError() {
     return target.getAbstractClassInstantiationError(this);
   }
 }
 
 String format(double d, int fractionDigits, int width) {
   return d.toStringAsFixed(fractionDigits).padLeft(width);
 }