github/bug_report.md: Remove users@ and devel@
github/bug_report.md: Remove users@ and devel@

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