Remove last vestiges of removeAll from typed lists.

runtime/lib/typed_data.dart

Index: runtime/lib/typed_data.dart
diff --git a/runtime/lib/typed_data.dart b/runtime/lib/typed_data.dart
index e60c1459d560d8fa0179812755741de54faaae5a..006918c4a7ca7fbbcf2351056fd859a3c742d20d 100644
--- a/runtime/lib/typed_data.dart
+++ b/runtime/lib/typed_data.dart
@@ -432,16 +432,6 @@ abstract class _TypedListBase {
         "Cannot remove from a non-extendable array");
   }
 
-  void removeAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot remove from a non-extendable array");
-  }
-
-  void retainAll(Iterable elements) {
-    throw new UnsupportedError(
-        "Cannot remove from a non-extendable array");
-  }
-
   void removeWhere(bool test(element)) {
     throw new UnsupportedError(
         "Cannot remove from a non-extendable array");