remove sort

diff --git a/test/pub_cache_test.dart b/test/pub_cache_test.dart
index e84143d..4301d6f 100644
--- a/test/pub_cache_test.dart
+++ b/test/pub_cache_test.dart

@@ -147,7 +147,6 @@
       StringBuffer buf = new StringBuffer();
       PubCache cache = new PubCache();
       var packages = cache.getCachedPackages();
-      packages.sort();
       packages.forEach((pkg) {
         List versions = cache.getAllPackageVersions(pkg);
         buf.writeln(