Remove JavaSystem from java_core.

pkg/analyzer/lib/src/generated/java_core.dart

 // Copyright (c) 2014, 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 analyzer.src.generated.java_core;
 
-final Stopwatch nanoTimeStopwatch = new Stopwatch();
-
 /**
  * Inserts the given arguments into [pattern].
  *
  *     format('Hello, {0}!', 'John') = 'Hello, John!'
  *     format('{0} are you {1}ing?', 'How', 'do') = 'How are you doing?'
  *     format('{0} are you {1}ing?', 'What', 'read') = 'What are you reading?'
  */
 String format(String pattern,
     [arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7]) {
   // TODO(rnystrom): This is not used by analyzer, but is called by
@@ skipping 176 matching lines @@
     return target.indexOf(str, fromIndex);
   }
 
   static int lastIndexOf(String target, String str, int fromIndex) {
     if (fromIndex > target.length) return -1;
     if (fromIndex < 0) fromIndex = 0;
     return target.lastIndexOf(str, fromIndex);
   }
 }
 
-class JavaSystem {
-  static int currentTimeMillis() {
-    return (new DateTime.now()).millisecondsSinceEpoch;
-  }
-
-  static int nanoTime() {
-    if (!nanoTimeStopwatch.isRunning) {
-      nanoTimeStopwatch.start();
-    }
-    return nanoTimeStopwatch.elapsedMicroseconds * 1000;
-  }
-}
-
 class PrintStringWriter extends PrintWriter {
   final StringBuffer _sb = new StringBuffer();
 
   void print(x) {
     _sb.write(x);
   }
 
   String toString() => _sb.toString();
 }
 
@@ skipping 12 matching lines @@
     this.print(s);
     this.newLine();
   }
 }
 
 class URISyntaxException implements Exception {
   final String message;
   URISyntaxException(this.message);
   String toString() => "URISyntaxException: $message";
 }