headless-browser: Remove ability to run with AST interpreter

Userland/Utilities/headless-browser.cpp

@@ -382,7 +382,6 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     bool dump_layout_tree = false;
     bool dump_text = false;
     bool is_layout_test_mode = false;
-    bool use_ast_interpreter = false;
     StringView test_root_path;
 
     Core::ArgsParser args_parser;
@@ -394,7 +393,6 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     args_parser.add_option(resources_folder, "Path of the base resources folder (defaults to /res)", "resources", 'r', "resources-root-path");
     args_parser.add_option(web_driver_ipc_path, "Path to the WebDriver IPC socket", "webdriver-ipc-path", 0, "path");
     args_parser.add_option(is_layout_test_mode, "Enable layout test mode", "layout-test-mode", 0);
-    args_parser.add_option(use_ast_interpreter, "Enable JavaScript AST interpreter (deprecated)", "ast", 0);
     args_parser.add_positional_argument(url, "URL to open", "url", Core::ArgsParser::Required::No);
     args_parser.parse(arguments);
 
@@ -416,7 +414,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         is_layout_test_mode = true;
     }
 
-    auto view = TRY(HeadlessWebContentView::create(move(theme), window_size, web_driver_ipc_path, is_layout_test_mode ? WebView::IsLayoutTestMode::Yes : WebView::IsLayoutTestMode::No, use_ast_interpreter ? WebView::UseJavaScriptBytecode::No : WebView::UseJavaScriptBytecode::Yes));
+    auto view = TRY(HeadlessWebContentView::create(move(theme), window_size, web_driver_ipc_path, is_layout_test_mode ? WebView::IsLayoutTestMode::Yes : WebView::IsLayoutTestMode::No, WebView::UseJavaScriptBytecode::Yes));
     RefPtr<Core::Timer> timer;
 
     if (!test_root_path.is_empty()) {