Revert "Add support for generic function type syntax, part 1" (TBR)

pkg/analyzer/lib/src/dart/ast/resolution_map.dart

 // Copyright (c) 2016, 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:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 
 /**
@@ skipping 133 matching lines @@
       node.staticInvokeType;
 
   @override
   ParameterElement staticParameterElementForExpression(Expression node) =>
       node.staticParameterElement;
 
   @override
   DartType staticTypeForExpression(Expression node) => node.staticType;
 
   @override
-  DartType typeForTypeName(TypeAnnotation node) => node.type;
+  DartType typeForTypeName(TypeName node) => node.type;
 
   @override
   Element uriElementForDirective(UriBasedDirective node) => node.uriElement;
 }