VM: Remove _leftShiftWithMask32.

runtime/vm/ast_transformer.cc

Index: runtime/vm/ast_transformer.cc
diff --git a/runtime/vm/ast_transformer.cc b/runtime/vm/ast_transformer.cc
index a81babbdaf2dd78b7809fb57e09bed2b385e678e..28861ef432800c14e72611e22fb7c0cbb9fa7975 100644
--- a/runtime/vm/ast_transformer.cc
+++ b/runtime/vm/ast_transformer.cc
@@ -298,19 +298,6 @@ void AwaitTransformer::VisitBinaryOpNode(BinaryOpNode* node) {
 }
 
 
-void AwaitTransformer::VisitBinaryOpWithMask32Node(
-    BinaryOpWithMask32Node* node) {
-  ASSERT((node->kind() != Token::kAND) && (node->kind() != Token::kOR));
-  AstNode* new_left = Transform(node->left());
-  AstNode* new_right = Transform(node->right());
-  result_ = MakeName(new(Z) BinaryOpWithMask32Node(node->token_pos(),
-      node->kind(),
-      new_left,
-      new_right,
-      node->mask32()));
-}
-
-
 void AwaitTransformer::VisitComparisonNode(ComparisonNode* node) {
   AstNode* new_left = Transform(node->left());
   AstNode* new_right = Transform(node->right());