net/nanocoap: remove obsolete functions to add Uri-Query option
net/nanocoap: remove obsolete functions to add Uri-Query option

kaspar030/RIOT,authmillenon/RIOT,jasonatran/RIOT,basilfx/RIOT,basilfx/RIOT,OTAkeys/RIOT,jasonatran/RIOT,ant9000/RIOT,ant9000/RIOT,basilfx/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,yogo1212/RIOT,kYc0o/RIOT,kaspar030/RIOT,OlegHahm/RIOT,ant9000/RIOT,OTAkeys/RIOT,yogo1212/RIOT,OlegHahm/RIOT,miri64/RIOT,kYc0o/RIOT,jasonatran/RIOT,kYc0o/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,jasonatran/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,basilfx/RIOT,miri64/RIOT,miri64/RIOT,jasonatran/RIOT,authmillenon/RIOT,basilfx/RIOT,yogo1212/RIOT,authmillenon/RIOT,kYc0o/RIOT,ant9000/RIOT,authmillenon/RIOT,miri64/RIOT,OTAkeys/RIOT,authmillenon/RIOT,ant9000/RIOT,yogo1212/RIOT,kaspar030/RIOT,miri64/RIOT,yogo1212/RIOT,OTAkeys/RIOT