How to Hide My Style Anytime Admin Menus

function plt_hide_my_style_anytime_menus() {
	//Hide "My Style Anytime".
	remove_menu_page('my-style-anytime');
	//Hide "My Style Anytime → General".
	remove_submenu_page('my-style-anytime', 'my-style-anytime');
	//Hide "My Style Anytime → Manage Style".
	remove_submenu_page('my-style-anytime', 'mysat_editor_page');
	//Hide "My Style Anytime → Customization".
	remove_submenu_page('my-style-anytime', 'mysat_custom_page');
	//Hide "My Style Anytime → Security".
	remove_submenu_page('my-style-anytime', 'mysat_security_page');
	//Hide "My Style Anytime → Settings".
	remove_submenu_page('my-style-anytime', 'mysat_settings_page');
	//Hide "My Style Anytime → Backup".
	remove_submenu_page('my-style-anytime', 'mysat_backup_page');
}

add_action('admin_menu', 'plt_hide_my_style_anytime_menus', 1000);

Where do I put this code?