Don't double-print skipped tests in the expanded reporter.

test/runner/expanded_reporter_test.dart

Index: test/runner/expanded_reporter_test.dart
diff --git a/test/runner/expanded_reporter_test.dart b/test/runner/expanded_reporter_test.dart
index a35f569271f42f99bf05b9846c2f13e58d2ccb4b..c245cb9f4780ff5565316a6a3645cda4ad12e9e6 100644
--- a/test/runner/expanded_reporter_test.dart
+++ b/test/runner/expanded_reporter_test.dart
@@ -297,10 +297,8 @@ void main() {
           test('skip 2', () {}, skip: 'or another');""",
           """
           +0: skip 1
-          +0 ~1: skip 1
             Skip: some reason
           +0 ~1: skip 2
-          +0 ~2: skip 2
             Skip: or another
           +0 ~2: All tests skipped.""");
     });