Don't be ridiculous. People have been trying to get the Second Amendment removed from the Constitution since it was put there. Hell, people (Federalists...many of whom we deem our Founding Fathers) were avidly opposed to the entire idea of having a Bill of Rights in the first place. It's not going anywhere.
Yep, I don't think It will be going anywhere. Isn't there something protecting it from being banned?
Well there would have to be an Amendment to the Constitution removing it. That in itself is a ridiculously difficult feat the way our government is set up. Obviously getting an Amendment passed isn't too easy considering only 27 Amendments have been ratified since 1789 and there have been literally thousands of Amendments proposed.
Then, of course, you'll have the obvious backlash from the citizens (even those who don't own guns will largely be involved). It would be political suicide for almost any Congress member to push legislation removing the 2nd Amendment.
I'm not aware of any specific law or anything barring the government from removing aspects of the Bill of Rights. They're consistently changing anyway, based on how the Supreme Court interprets them.