Remove unused parameter from initForIncrementalResolution

pkg/analyzer/lib/src/generated/resolver.dart

 // 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.
 
 library analyzer.src.generated.resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 7273 matching lines @@
     }
     if (kind == ElementKind.PARAMETER) {
       return element as VariableElement;
     }
     return null;
   }
 
   /**
    * Prepares this [ResolverVisitor] to using it for incremental resolution.
    */
-  void initForIncrementalResolution([Declaration declaration = null]) {
-    if (declaration != null) {
-      Element element = declaration.element;
-      if (element is ExecutableElement) {
-        _enclosingFunction = element;
-      }
-    }
+  void initForIncrementalResolution() {
     _overrideManager.enterScope();
   }
 
   /**
    * Given a downward inference type [fnType], and the declared
    * [typeParameterList] for a function expression, determines if we can enable
    * downward inference and if so, returns the function type to use for
    * inference.
    *
    * This will return null if inference is not possible. This happens when
@@ skipping 5468 matching lines @@
     nonFields.add(node);
     return null;
   }
 
   @override
   Object visitNode(AstNode node) => node.accept(TypeResolverVisitor_this);
 
   @override
   Object visitWithClause(WithClause node) => null;
 }