How to Hide WP Encryption - One Click SSL & Force HTTPS Admin Menus

function plt_hide_wp_letsencrypt_ssl_menus() {
	//Hide "WP Encryption".
	remove_menu_page('wp_encryption');
	//Hide "WP Encryption → WP Encryption".
	remove_submenu_page('wp_encryption', 'wp_encryption');
	//Hide "WP Encryption → SSL HEALTH 7".
	remove_submenu_page('wp_encryption', 'wp_encryption_ssl_health');
	//Hide "WP Encryption → Download SSL Certificates".
	remove_submenu_page('wp_encryption', 'wp_encryption_download');
	//Hide "WP Encryption → Force HTTPS".
	remove_submenu_page('wp_encryption', 'wp_encryption_force_https');
	//Hide "WP Encryption → Advanced Insecure Content Scanner".
	remove_submenu_page('wp_encryption', 'wp_encryption_mixed_scanner');
	//Hide "WP Encryption → RESET".
	remove_submenu_page('wp_encryption', 'wp_encryption_reset');
	//Hide "WP Encryption → Affiliation".
	remove_submenu_page('wp_encryption', 'wp_encryption-affiliation');
	//Hide "WP Encryption → Support Forum".
	remove_submenu_page('wp_encryption', 'wp_encryption-wp-support-forum');
	//Hide "WP Encryption → Upgrade".
	remove_submenu_page('wp_encryption', 'wp_encryption-pricing');
}

add_action('admin_menu', 'plt_hide_wp_letsencrypt_ssl_menus', 1000000000);

Where do I put this code?