[PR] Remove infiltrator from syndicate vendor

[DimWhat]

My current issue about infiltrator is that it is simply made by it's gun alone. It is much better at taking down any target than any other operative since the dart gun can just penetrate any armour and then (due to bugs) the knockout could last anywhere from a few seconds to a few minutes. This is from a single shot! You can easily keep down an entire room of people and slowly beat them to death no matter their armour. I'd be happy with the infiltrator remaining as long as that gun is adjusted.