Remove useless prototypes.
Remove useless prototypes.

tcatm/babeld,dtaht/babeld-shortrtt-metrics,Drooids/babeld,Gwendocg/babeldToS,Gwendocg/babeldToS,jech/babeld,wlanslovenija/babeld,woniullb/babeld,jech/babeld,wlanslovenija/babeld,boutier/babeld,sudomesh/babeld