subtract

Returns a set containing all elements that are contained by this array and not contained by the specified collection.

infix fun <T> Array<out T>.subtract(other: Iterable<T>): Set<T>(source)

val arr = arrayOf(1, 2, 3, 4, 5)
val toRemove = listOf(2, 4)

val result: Set<Int> = arr subtract toRemove

println(result) // Output: [1, 3, 5]

Source