As far as I know, small distractions can be removed. I believe it says somewhere that you may remove powerlines etc... I believe a radio tower would fit that category.
I would say you can clone it out. I've seen some before and after pics from advanced challenges where a lot more than that was cloned out and they weren't DQ'ed. So if it was good enough for them, it should be good enough for you.
Oh, by the way, there is no more "major element" rule in advanced editing, that was taken out when the rules were rewritten.
Well - - as usual, this thread makes it clear as mud.
I'd say clone it out and paste in a cool lighthouse or something. But for absolute certainty, I would confer with Slippy, the three time red ribbon winner, he knows his stuff.
