Fixes #4015. Hide Negotiation mode when in IKEv2 since it is not required.
Fixes #4015. Hide Negotiation mode when in IKEv2 since it is not required.

NewEraCracker/pfsense,ptorsten/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,pfsense/pfsense,ch1c4um/pfsense,phil-davis/pfsense,phil-davis/pfsense,NOYB/pfsense,jxmx/pfsense,pfsense/pfsense,phil-davis/pfsense,brunostein/pfsense,brunostein/pfsense,brunostein/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,dennypage/pfsense,BlackstarGroup/pfsense,pfsense/pfsense,NOYB/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,BlackstarGroup/pfsense,jxmx/pfsense,NOYB/pfsense,pfsense/pfsense,jxmx/pfsense,dennypage/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,NewEraCracker/pfsense,ch1c4um/pfsense,dennypage/pfsense