Remove the unused operations queue

pkg/analysis_server/test/operation/operation_test.dart

Index: pkg/analysis_server/test/operation/operation_test.dart
diff --git a/pkg/analysis_server/test/operation/operation_test.dart b/pkg/analysis_server/test/operation/operation_test.dart
deleted file mode 100644
index e6d6e5a61d2fcb926f2ad4b5371a10d6b54eb33e..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/test/operation/operation_test.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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.
-
-import 'package:analysis_server/src/operation/operation.dart';
-import 'package:test/test.dart';
-
-main() {
-  group('ServerOperationPriority', () {
-    test('toString', () {
-      expect(ServerOperationPriority.ANALYSIS.toString(), 'ANALYSIS');
-    });
-  });
-}