More clean-up in 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 9f4db0722a7ddc528f9b54d3d17fd31db0dbb034..984bc7305cbb458fbf7a83de05e8a01ba07bd53c 100644
--- a/pkg/analysis_server/lib/src/single_context_manager.dart
+++ b/pkg/analysis_server/lib/src/single_context_manager.dart
@@ -200,9 +200,7 @@ class SingleContextManager implements ContextManager {
     }
     // Create or update the analysis context.
     if (context == null) {
-      UriResolver packageResolver = packageResolverProvider(contextFolder);
-      context = callbacks.addContext(contextFolder, defaultContextOptions,
-          new CustomPackageResolverDisposition(packageResolver));
+      context = callbacks.addContext(contextFolder, defaultContextOptions);
       ChangeSet changeSet =
           _buildChangeSet(added: _includedFiles(includedPaths, excludedPaths));
       callbacks.applyChangesToContext(contextFolder, changeSet);