Remove more libraries directives from server

pkg/analysis_server/lib/src/single_context_manager.dart

Index: pkg/analysis_server/lib/src/single_context_manager.dart
diff --git a/pkg/analysis_server/lib/src/single_context_manager.dart b/pkg/analysis_server/lib/src/single_context_manager.dart
index ed1d816350da9e76e2e665e327afafa94eb3e504..b0bf0334a741711492b30e5ed8bcaea8039e3a6a 100644
--- a/pkg/analysis_server/lib/src/single_context_manager.dart
+++ b/pkg/analysis_server/lib/src/single_context_manager.dart
@@ -2,8 +2,6 @@
 // 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 analysis_server.src.single_context_manager;
-
 import 'dart:async';
 import 'dart:core';
 import 'dart:math' as math;
@@ -137,19 +135,19 @@ class SingleContextManager implements ContextManager {
   }
 
   @override
-  AnalysisContext getContextFor(String path) {
-    if (context == null) {
-      return null;
-    } else if (_isContainedIn(includedPaths, path)) {
-      return context;
+  Folder getContextFolderFor(String path) {
+    if (isInAnalysisRoot(path)) {
+      return contextFolder;
     }
     return null;
   }
 
   @override
-  Folder getContextFolderFor(String path) {
-    if (isInAnalysisRoot(path)) {
-      return contextFolder;
+  AnalysisContext getContextFor(String path) {
+    if (context == null) {
+      return null;
+    } else if (_isContainedIn(includedPaths, path)) {
+      return context;
     }
     return null;
   }