Remove unused Zone argument from InitializeAstVisitor

test/cctest/test-asm-validator.cc

Index: test/cctest/test-asm-validator.cc
diff --git a/test/cctest/test-asm-validator.cc b/test/cctest/test-asm-validator.cc
index c5bf5e5973108346635ca60b44523d47b5bca498..28ab1e91a62c8a27d90540a9e0c3740b357ccbc2 100644
--- a/test/cctest/test-asm-validator.cc
+++ b/test/cctest/test-asm-validator.cc
@@ -67,7 +67,7 @@ std::string Validate(Zone* zone, const char* source,
       info.scope()->declarations()->at(0)->AsFunctionDeclaration()->fun();
   AsmTyper typer(isolate, zone, *script, root);
   if (typer.Validate()) {
-    ExpressionTypeCollector(isolate, zone, root, types).Run();
+    ExpressionTypeCollector(isolate, root, types).Run();
     return "";
   } else {
     return typer.error_message();