How to disable default menu bar items in Swift / SwiftUI for macOS

App.swift

//
//  App.swift
//
//  Created by Ben Tindall on 30/03/2022.
//

import Foundation
import SwiftUI
import Cocoa

final class AppDelegate: NSObject, NSApplicationDelegate {
    func applicationWillUpdate(_ notification: Notification) {
        if let menu = NSApplication.shared.mainMenu {
            if let file = menu.items.first(where: { $0.title == "File"}) {
                menu.removeItem(file);
            }
            if let edit = menu.items.first(where: { $0.title == "Edit"}) {
                menu.removeItem(edit);
            }
            if let window = menu.items.first(where: { $0.title == "Window"}) {
                menu.removeItem(window);
            }
            if let view = menu.items.first(where: { $0.title == "View"}) {
                menu.removeItem(view);
            }
            if let help = menu.items.first(where: { $0.title == "Help"}) {
                menu.removeItem(help);
            }
        }
    }
}

@main
struct AutoClickerApp: App {
    @NSApplicationDelegateAdaptor(AppDelegate.self) var delegate

    var body: some Scene {
        WindowGroup {
            EmptyView()
        }
    }
}

Worked like a charm. Thanks!