Remove mention of RIP from manual page.
Remove mention of RIP from manual page.

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