Removed the iterator package

There is no need for it at the moment.

iterator/iterator.go

@@ -1,30 +0,0 @@
-package iterator
-
-type Iterator[ELEMENT_TYPE any] struct {
-	index int
-	slice []ELEMENT_TYPE
-}
-
-func New[ELEMENT_TYPE any] (
-	slice []ELEMENT_TYPE,
-) (
-	iterator Iterator[ELEMENT_TYPE],
-) {
-	iterator.slice = slice
-	return
-}
-
-func (iterator *Iterator[ELEMENT_TYPE]) Length () (length int) {
-	return len(iterator.slice)
-}
-
-func (iterator *Iterator[ELEMENT_TYPE]) Next () (element ELEMENT_TYPE) {
-	if !iterator.MoreLeft() { return }
-	element = iterator.slice[iterator.index]
-	iterator.index ++
-	return
-}
-
-func (iterator *Iterator[ELEMENT_TYPE]) MoreLeft () (moreLeft bool) {
-	return iterator.index < len(iterator.slice)
-}