Clean up type parameters in comments

pkg/analyzer/lib/dart/ast/ast.dart

Index: pkg/analyzer/lib/dart/ast/ast.dart
diff --git a/pkg/analyzer/lib/dart/ast/ast.dart b/pkg/analyzer/lib/dart/ast/ast.dart
index 0c65f34f43dde396d0468335f0cf4fb3c4ccd347..2af93577cae0df7d451e3665f00b4493189ad75a 100644
--- a/pkg/analyzer/lib/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/dart/ast/ast.dart
@@ -517,21 +517,20 @@ abstract class AstNode implements SyntacticEntity {
    * Use the given [visitor] to visit this node. Return the value returned by
    * the visitor as a result of visiting this node.
    */
-  dynamic/*=E*/ accept/*<E>*/(AstVisitor/*<E>*/ visitor);
+  E accept<E>(AstVisitor<E> visitor);
 
   /**
    * Return the most immediate ancestor of this node for which the [predicate]
    * returns `true`, or `null` if there is no such ancestor. Note that this node
    * will never be returned.
    */
-  AstNode/*=E*/ getAncestor/*<E extends AstNode>*/(
-      Predicate<AstNode> predicate);
+  E getAncestor<E extends AstNode>(Predicate<AstNode> predicate);
 
   /**
    * Return the value of the property with the given [name], or `null` if this
    * node does not have a property with the given name.
    */
-  Object/*=E*/ getProperty/*<E>*/(String name);
+  E getProperty<E>(String name);
 
   /**
    * Set the value of the property with the given [name] to the given [value].