NAME
	delete_perm (lfun)
SYNOPSIS
	void delete_perm( key );
deletes the entry for key in the pset mapping of an object that
inherits /std/object.c
the difference between delete and delete_perm and related
functions is that in objects that save_object() such as
players, anything with a _perm will be a permanent change.
Notice that they are 2 seperate functios, with 2 seperate
databases.

see also: set_perm, query_perm, delete