Remove UriReferencedElement with its uri/uriOffset/uriEnd properties.

pkg/analysis_server/lib/src/status/element_writer.dart

 // Copyright (c) 2015, 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 'dart:collection';
 import 'dart:convert';
 
 import 'package:analysis_server/src/status/tree_writer.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
@@ skipping 129 matching lines @@
     }
     if (element is TypeDefiningElement) {
       properties['type'] = element.type;
     }
     if (element is TypeParameterElement) {
       properties['bound'] = element.bound;
     }
     if (element is TypeParameterizedElement) {
       properties['typeParameters'] = element.typeParameters;
     }
-    if (element is UriReferencedElement) {
-      properties['uri'] = element.uri;
-    }
     if (element is VariableElement) {
       properties['constantValue'] = element.constantValue;
       properties['hasImplicitType'] = element.hasImplicitType;
       properties['isConst'] = element.isConst;
       properties['isFinal'] = element.isFinal;
       properties['isStatic'] = element.isStatic;
       properties['type'] = element.type;
     }
 
     return properties;
@@ skipping 10 matching lines @@
     buffer.write(HTML_ESCAPE.convert(element.toString()));
     if (element.isSynthetic) {
       buffer.write('</i>');
     }
     buffer.write(' <span style="color:gray">(');
     buffer.write(element.runtimeType);
     buffer.write(')</span>');
     buffer.write('<br>');
   }
 }