* Removes allow_transfer from /datum/mutation/human
This was needed for cloning, however, that has long since been removed
* Removes var/time_coeff
This hasn't been used in a very long time
* Removes var/get_chance
This was literally used NOWHERE
* Removes var/lowest_value
This was ALSO used literally nowhere
* Updates _mutations.dm to code standards
This was all out of date, looks a little better now
* small code improvement
* im stupid
3fe4caaa8a