remove$\_$duplicates$($arr: StaticArray$)->$ StaticArray:

Write a function that receives a StaticArray that is already in sorted order, either

non$-$descending or non$-$ascending. The function will return a new StaticArray with all

duplicate values removed. The original array must not be modified.

You may assume that the input array will contain one or more homogeneous elements in

sorted order $($either all numbers, or strings, or custom objects, but never a mix of these$).$

You do not need to write checks for these conditions.

For full credit, the function must be implemented with O$($N$)$ complexity.