Remove "times" integer extension

[waynewbishop]

Hi Richard;

Just making some notes. When refactoring the merge sort it looks like we can also remove this extension as well.

extension Int {

    //iterates the closure body a specified number of times
    func times(closure:(Int)->Void) {
        for i in 0...self {
            closure(i)
        }
    }

}

[waynewbishop]

After review this I've decided to keep this in the code as is. It's a really neat function that could be utilized in other areas.

[voidet]

Great :)