Wording is ambiguous.

This is not even a waferthin wrapper around a native method. It is a native method.

This is not worthy of a kata. "Is the concept behind this kata novel?" Given that it's a native method, no, it's not in any way novel.

Please just unpublish this.

Also, where are the random tests?

The kata did not specify whether to cut the size of the array down in-place, or leave the original array intact while returning a new array satisfying the property.