Time to put a knife in PPTP
PPTP comes out of pfSense in 2.3.
this bug is opened so we remember to do it.
Retire PPTP server, fixes #4226:
- Remove PPTP server and all related code
- Bump config version 12.2
- Write upgrade config code to remove pptpd section and also cleanup
firewall and NAT rules using PPTP interface or src/des