Remove unused instance field

pkg/analyzer/lib/src/task/dart.dart

Index: pkg/analyzer/lib/src/task/dart.dart
diff --git a/pkg/analyzer/lib/src/task/dart.dart b/pkg/analyzer/lib/src/task/dart.dart
index 3c9c426c709f019db5c771bf8706b6c499c56425..91cc75586d44168cd4692536fdcd9bd54e21cc80 100644
--- a/pkg/analyzer/lib/src/task/dart.dart
+++ b/pkg/analyzer/lib/src/task/dart.dart
@@ -3674,8 +3674,8 @@ class InferStaticVariableTypeTask extends InferStaticVariableTask {
       //
       RecordingErrorListener errorListener = new RecordingErrorListener();
       Expression initializer = declaration.initializer;
-      ResolutionContext resolutionContext = ResolutionContextBuilder.contextFor(
-          initializer, AnalysisErrorListener.NULL_LISTENER);
+      ResolutionContext resolutionContext =
+          ResolutionContextBuilder.contextFor(initializer);
       ResolverVisitor visitor = new ResolverVisitor(
           variable.library, variable.source, typeProvider, errorListener,
           nameScope: resolutionContext.scope);