If you could dodge or burn it away, a la Adams, sure. But, as it is, no, I wouldn't enter it. That tower, right or wrong, is a significant part of the landscape.
All of photography is a lie. We keep things out of the field of view we don't want to be seen, we have colors and tone that weren't before our eyes. we have depths of field that are wholly unlike what the eye sees, we have motion blur and stop action unlike what we really see, and so on. So, yes, photography is a lie. But, from the standpoint of entering a contest, a contest where you are pitting your work against that of others, and presenting it without proper qualification, I would just hold off on that edit, and keep it for yourself and those in your party, and enjoy it as such. I wouldn't have any problem selling something like that as a print, as long as I mentioned what I'd done to the buyer. Because, in that sense, the tower, or lack thereof, it becomes important - it reinforces our appreciation of open spaces, even if this one wasn't.