Remove CompilationUnitElement.getElementAt().

pkg/analyzer/lib/dart/element/element.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.
 
 /**
  * Defines the element model. The element model describes the semantic (as
  * opposed to syntactic) structure of Dart code. The syntactic structure of the
  * code is modeled by the [AST structure](../ast/ast.dart).
  *
  * The element model consists of two closely related kinds of objects: elements
@@ skipping 455 matching lines @@
   /**
    * Return a list containing all of the classes contained in this compilation
    * unit.
    */
   List<ClassElement> get types;
 
   @override
   CompilationUnit computeNode();
 
   /**
-   * Return the element at the given [offset], maybe `null` if no such element.
-   */
-  Element getElementAt(int offset);
-
-  /**
    * Return the enum defined in this compilation unit that has the given [name],
    * or `null` if this compilation unit does not define an enum with the given
    * name.
    */
   ClassElement getEnum(String name);
 
   /**
    * Return the class defined in this compilation unit that has the given
    * [name], or `null` if this compilation unit does not define a class with the
    * given name.
@@ skipping 1593 matching lines @@
   DartType get type;
 
   /**
    * Return a representation of the value of this variable, forcing the value
    * to be computed if it had not previously been computed, or `null` if either
    * this variable was not declared with the 'const' modifier or if the value of
    * this variable could not be computed because of errors.
    */
   DartObject computeConstantValue();
 }