pkg: analysis aided cleanup

pkg/intl/test/number_format_test.dart

 /**
  * Copyright (c) 2012, 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 number_format_test;
 
 import 'package:unittest/unittest.dart';
-import 'package:intl/number_symbols.dart';
 import 'package:intl/number_symbols_data.dart';
 import 'package:intl/intl.dart';
 import 'number_test_data.dart';
 import 'dart:math';
 
 /**
  * Tests the Numeric formatting library in dart.
  */
 var testNumbers = {
   "0.001":  0.001,
@@ skipping 68 matching lines @@
   });
 
   test('Exponential form', () {
     var number = new NumberFormat("#.###E0");
     for (var x in testExponential.keys) {
       var formatted = number.format(testExponential[x]);
       expect(formatted, x);
     }
   });
 }