RemoveAt = function (array, index, callback, context)
{
    if (context === undefined) { context = array; }

    if (index < 0 || index > array.length - 1)
    {
        throw new Error('Index out of bounds');
    }

    var item = SpliceOne(array, index);

    if (callback)
    {
        callback.call(context, item);
    }

    return item;
}
Removes the item from the given position in the array.

The array is modified in-place.

You can optionally specify a callback to be invoked for the item if it is successfully removed from the array.

@function Phaser.Utils.Array.RemoveAt
@since 3.4.0

@param {array} array - The array to be modified.
@param {number} index - The array index to remove the item from. The index must be in bounds or it will throw an error.
@param {function} [callback] - A callback to be invoked for the item removed from the array.
@param {object} [context] - The context in which the callback is invoked.

@return {*} The item that was removed.