Fix typo in main_win. This is follow up https://github.com/flutter/engine/pull/4564 (#4572)

shell/platform/win/main_win.cc

@@ -86,8 +86,6 @@ void RunNonInteractive(fxl::CommandLine initial_command_line,
                                /* icu_data_path= */ "",
                                /* application_library_path= */ "", bundle_path);
 
-  shell::Shell::InitStandalone(initial_command_line);
-
   // Note that this task observer must be added after the observer that drains
   // the microtask queue.
   ScriptCompletionTaskObserver task_observer(