elements function no longer supported

tests/notyet/029-elements.lisp

-
-(testcmp "elements l 0" '(elements ()) nil)
-(testcmp "elements l 1" '(elements '(123)) '(123))
-(testcmp "elements l n" '(elements '(123 456 789)) '(123 456 789))
-
-(testcmp "elements s 0" '(elements "") nil)
-(testcmp "elements s 1" '(elements "d") '(?d))
-(testcmp "elements s n" '(elements "Da geht die Sau durch den Knick!")
-         '(?D ?a ?\Space ?g ?e ?h ?t ?\Space ?d ?i ?e ?\Space ?S ?a ?u
-           ?\Space ?d ?u ?r ?c ?h ?\Space ?d ?e ?n ?\Space ?K ?n ?i ?c ?k ?!))
-(testcmp "elements s u" '(elements "Ärgörnüß") '(?Ä ?r ?g ?ö ?r ?n ?ü ?ß))
-
-
-(testcmp "elements v 0" '(elements []) nil)
-(testcmp "elements v 1" '(elements [123]) '(123))
-(testcmp "elements v n" '(elements [123 456 789]) '(123 456 789))
-