LOSTANDFOUND.md: fix chronos board removal commit hash
LOSTANDFOUND.md: fix chronos board removal commit hash

Rebasing seems to have changed it.

RIOT-OS/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,authmillenon/RIOT,OlegHahm/RIOT,ant9000/RIOT,RIOT-OS/RIOT,ant9000/RIOT,jasonatran/RIOT,OlegHahm/RIOT,jasonatran/RIOT,authmillenon/RIOT,kaspar030/RIOT,miri64/RIOT,OlegHahm/RIOT,authmillenon/RIOT,miri64/RIOT,jasonatran/RIOT,kaspar030/RIOT,jasonatran/RIOT,ant9000/RIOT,OTAkeys/RIOT,miri64/RIOT,kYc0o/RIOT,kYc0o/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,OTAkeys/RIOT,kaspar030/RIOT,OlegHahm/RIOT,kYc0o/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,kaspar030/RIOT,ant9000/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,kYc0o/RIOT,miri64/RIOT,kYc0o/RIOT,miri64/RIOT,ant9000/RIOT,OTAkeys/RIOT,authmillenon/RIOT,authmillenon/RIOT