Why are two columns holding up this support beam?
From the information you've provided, it seems as though the post is likely not needed.  However, none of us have been to your house, seen the plans, nor talked to the builder or engineer.  So we cannot say for sure, what the purpose of the post is. 

I've seen temporary braces, and even tools left behind on builds. So it's definitely possible that it's no longer needed. But when it comes to the structural support of your home, you're going to want to be sure.

Contact Ryan Homes, and ask them about it. If they can't answer, find the original building plans (sometimes given to the original owner, otherwise should be on file at city/town hall). If you're still not sure, contact a structural engineer to have a look.

Don't remove the post until you're sure it's not needed.