Remove Security's access to the crematorium on RP

[Cleaverwolf]

Often on RP, security will often barge into the crematorium whenever they like to use it as they please, usually without asking the chaplain first or even saying anything to them. While this would be fine on classic, this is RP and I would expect at least a little bit interaction, and anyways the chaplain usually get ignored 99% of the time so making the station take them a little bit more seriously is good. Captain, AI, HOP (Correct me if I am wrong) and any cyborg can assist security if need be.