Solved it:
Start with : sudo apt-get install ir-keytable
Make a file sudo nano /etc/systemd/system/script.service containing:
[Unit]
Description=Disable duobleclicks with remote
After = remote-fs.target network-online.target mediacenter.service
[Service]
User=osmc
Group=osmc
Type=simple
ExecStart=/var/scripts/remote.sh
TimeoutStopSec=20
[Install]
WantedBy=multi-user.target
and then sudo mkdir /var/scripts and sudo nano /var/scripts/remote.sh containing:
#!/bin/sh
#sudo rmmod ir_rc6_decoder
sudo ir-keytable -p lirc
exit 0
change filerights sudo chmod x /var/scripts/remote.sh
last thing: sudo systemctl enable script.service
reboot and it works