How to Hide Eazy Plugin Manager Admin Menus

function plt_hide_plugins_on_steroids_menus() {
	//Hide "Plugins → All Bookmarks".
	remove_submenu_page('plugins.php', 'plugin-install.php?tab=bookmarks');

	//Hide "Eazy Plugin Manager".
	remove_menu_page('pos-settings');
	//Hide "Eazy Plugin Manager → Dashboard".
	remove_submenu_page('pos-settings', 'pos-settings');
	//Hide "Eazy Plugin Manager → Features".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#home');
	//Hide "Eazy Plugin Manager → Bookmarks".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#bookmarks');
	//Hide "Eazy Plugin Manager → History".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#history');
	//Hide "Eazy Plugin Manager → Account".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#account');
	//Hide "Eazy Plugin Manager → Support".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#support');
	//Hide "Eazy Plugin Manager → Settings".
	remove_submenu_page('pos-settings', 'admin.php?page=pos-settings#settings');
}

add_action('admin_menu', 'plt_hide_plugins_on_steroids_menus', 11);
Where do I put this code?