Server deleted from the database! However, IPTV Panel was unable to connect to the remote SSH to completely delete the files. Please do it manually by executing the following commands:
rm -rf /home/xtreamcodesrm -rf /home/xtreamcodes
crontab -u xtreamcodes -e
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/live_checker.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/offline_cons.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/servers_checker.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/setup_cache.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/stream_errors.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/tmp_del.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/users_checker.php # Xtream-Codes IPTV Panel
*/1 * * * * /home/xtreamcodes/iptv_xtream_codes/php/bin/php /home/xtreamcodes/iptv_xtream_codes/crons/vod_checker.php # Xtream-Codes IPTV Panel

and delete everything that contain ffmpeg, php-fpm, nginx
same for: /etc/init.d/rc.local
then execute the command:
apt-get update && apt-get autoremove && apt-get autopurge

sudo apt-get install gshutdown 
sudo shutdown -P now

sudo pkill -9 nginx
sudo pkill -9 php
sudo pkill -9 php && /home/xtreamcodes/iptv_xtream_codes/php/sbin/php-fpm
sudo pgrep -u xtreamcodes
rm -rf /usr/bin/ffprobe
rm -rf /usr/bin/ffmpeg
crontab -u xtreamcodes -e
crontab -r -u xtreamcodes
killall -KILL -u xtreamcodes
userdel -r -f xtreamcodes
rm -rf /home/xtreamcodes/

delet xtreamui:

umount -l /home/xtreamcodes/iptv_xtream_codes/tmp
umount -l /home/xtreamcodes/iptv_xtream_codes/streams
chattr -i -a /home/xtreamcodes/iptv_xtream_codes/GeoLite2.mmdb
chmod ugo+w /home/xtreamcodes/iptv_xtream_codes/GeoLite2.mmdb
rm -rf /home/xtreamcodes
crontab -u xtreamcodes -e
sudo deluser xtreamcodes
sudo deluser --remove-all-files xtreamcodes
Then remove Xtreamcodes lines from fstab

sudo apt-get remove --purge mysql*
sudo apt-get purge mysql*
sudo apt-get autoremove
sudo apt-get autoclean
sudo apt-get remove dbconfig-mysql
sudo apt-get dist-upgrade
sudo apt-get install mysql-server