Login into the server.
# cd /usr/lib/Acronis/BackupAndRecovery/uninstall
# sh uninstall
It will remove the agent from the system
Remove all files and folders related to Acronis software:
# rm -Rf /etc/Acronis
# rm -Rf /var/lib/Acronis
# rm -Rf /usr/lib/Acronis
# rm -Rf ~/.Acronis
# rm -Rf /usr/src/snapapi*