Remove conversion from counterrev implants.

[Drewmajor11]

Being converted heals and also deaths and bloodshed are good for a gamemode like revs.

Being converted itself does not heal. The loyalty heals and if there is incentive to beat them down then it is likely people will outdamage the loyalty implant, frankly I'll even admit myself I tend to just leave revs dying on the floor after unrevving them because there isn't time to fix them.