Remove unused argument typeArguments from MigrationResolutionHooksImpl._transformCollectionElements.

Change-Id: I6c66b118d24419cae63cf0c6ad93d395c89b52cd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/204300
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>

Author: stereotype441

pkg/nnbd_migration/lib/src/fix_builder.dart

@@ -426,15 +426,15 @@ class MigrationResolutionHooksImpl
       node,
       () => node.elements,
       () => _collectionElements[node] ??=
-          _transformCollectionElements(node.elements, node.typeArguments));
+          _transformCollectionElements(node.elements));
 
   @override
   List<CollectionElement> getSetOrMapElements(SetOrMapLiteral node) =>
       _wrapExceptions(
           node,
           () => node.elements,
           () => _collectionElements[node] ??=
-              _transformCollectionElements(node.elements, node.typeArguments));
+              _transformCollectionElements(node.elements));
 
   @override
   DartType getTypeParameterBound(TypeParameterElementImpl element) {
@@ -808,7 +808,7 @@ class MigrationResolutionHooksImpl
   }
 
   List<CollectionElement> _transformCollectionElements(
-      NodeList<CollectionElement> elements, TypeArgumentList typeArguments) {
+      NodeList<CollectionElement> elements) {
     return elements
         .map(_transformCollectionElement)
         .where((e) => e != null)