Remove UriReferencedElement with its uri/uriOffset/uriEnd properties.

pkg/analyzer/lib/src/dart/element/handle.dart

Index: pkg/analyzer/lib/src/dart/element/handle.dart
diff --git a/pkg/analyzer/lib/src/dart/element/handle.dart b/pkg/analyzer/lib/src/dart/element/handle.dart
index 2b9751e89c9c235f778cf90db2acb8e777f47add..2c4284883aa4d42b60393691e832b4c4564030a5 100644
--- a/pkg/analyzer/lib/src/dart/element/handle.dart
+++ b/pkg/analyzer/lib/src/dart/element/handle.dart
@@ -222,15 +222,6 @@ class CompilationUnitElementHandle extends ElementHandle
   List<ClassElement> get types => actualElement.types;
 
   @override
-  String get uri => actualElement.uri;
-
-  @override
-  int get uriEnd => actualElement.uriEnd;
-
-  @override
-  int get uriOffset => actualElement.uriOffset;
-
-  @override
   CompilationUnit computeNode() => actualElement.computeNode();
 
   @override
@@ -541,15 +532,6 @@ class ExportElementHandle extends ElementHandle implements ExportElement {
 
   @override
   ElementKind get kind => ElementKind.EXPORT;
-
-  @override
-  String get uri => actualElement.uri;
-
-  @override
-  int get uriEnd => actualElement.uriEnd;
-
-  @override
-  int get uriOffset => actualElement.uriOffset;
 }
 
 /**
@@ -728,15 +710,6 @@ class ImportElementHandle extends ElementHandle implements ImportElement {
 
   @override
   int get prefixOffset => actualElement.prefixOffset;
-
-  @override
-  String get uri => actualElement.uri;
-
-  @override
-  int get uriEnd => actualElement.uriEnd;
-
-  @override
-  int get uriOffset => actualElement.uriOffset;
 }
 
 /**