Revert "Added the ability to filter which tests are run by name, using a --filter argument passed t…

dart/lib/unittest/config.dart

Index: dart/lib/unittest/config.dart
diff --git a/dart/lib/unittest/config.dart b/dart/lib/unittest/config.dart
index 1b9aa606ba3af60b74c581e05b00c4de32fc3a88..19560de956054ed58d40b81d0e95a26b9a8998c5 100644
--- a/dart/lib/unittest/config.dart
+++ b/dart/lib/unittest/config.dart
@@ -61,10 +61,7 @@ class Configuration {
     if (passed == 0 && failed == 0 && errors == 0) {
       print('No tests found.');
       // This is considered a failure too: if this happens you probably have a
-      // bug in your unit tests, unless you are filtering.
-      if (getFilter() != null) {
-        success = true;
-      }
+      // bug in your unit tests.
     } else if (failed == 0 && errors == 0 && uncaughtError == null) {
       print('All $passed tests passed.');
       success = true;