Interesting thought, but could the lack or removal of gun control be unconstitutional? After all, the amendment says "Well Regulated". And what is gun control? Regulation.
However, shall not be infringed. Regulations pertaining to who can and can not own weapons, primarily the federal laws that prohibit convicted felons such as murders and rapists, is against this.
The amendment requires us to have gun control, a form of regulation. But it also says that the rights shall not be infringed. Any form of regulation is, basically, the limitation of something because of, or due to, certian circumstances. In this case, regulation is limitation of the 2nd amendment. Which is, by the amendment, not allowed.
Ironic isn't it? The 2nd amendment both requires and forbids regulation.