If you think you might even consider fixing it one day I would just go ahead and seal them shut somehow. When/if you get your a/c going and you left the lines open you would have to worry about small debris getting into the openings. Also, the receiver/drier will be useless as it is responsible for absorbing moisture in the system. It will basically be saturated.
Trust me, a few extra minutes of your time will save you $$$ and hours down the road
Yep take nathan's advice, if you plan on fixing it down the road keep the lines there and keep it sealed up. If you don't ever plan on fixing it then pull them off, but I would think keeping the A/C going would make the vehicle worth a bit more.
I never plan on fixing it. I have the older ac that they don't service anymore, and its currently not working so I was just going to pull it out. I didnt think it would be a problem, but I wanted to make sure, thanks