Remove set closed

Author: phofl

doc/source/reference/arrays.rst

@@ -351,7 +351,6 @@ A collection of intervals may be stored in an :class:`arrays.IntervalArray`.
       arrays.IntervalArray.from_breaks
       arrays.IntervalArray.contains
       arrays.IntervalArray.overlaps
-      arrays.IntervalArray.set_closed
       arrays.IntervalArray.set_inclusive
       arrays.IntervalArray.to_tuples