doxygen: Remove users@ and devel@ mailing lists
doxygen: Remove users@ and devel@ mailing lists

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