Fail in uploading plugin - Fatal error

It says ... Fatal error: Cannot redeclare wp_smush_rating_message() (previously declared in /home/innovat3/public_html/wp-content/plugins/wp-smushit/wp-smush.php:73) in /home/innovat3/public_html/wp-content/plugins/wp-smush-pro/wp-smush.php on line 88