Your state should continue to recognize the LLC.
However, for federal income tax purposes, the partnership has dissolved/liquidated and the final partnership return should reflect that. You need to review the rules and necessary computations for the dissolution of a partnership.
As a single member LLC, for federal income tax purposes, unless you elect to file as corporation, then you file a Sch C, as a disregarded entity. A single member LLC cannot file a Form 1065 - the definition of a partnership means more than one partner.
Here is a link that can lead you to more information. Look on the left side for further links.
https://www.irs.gov/publications/p541
**Disclaimer: Effort has been made to offer correct information; but due to the discussion forum limitations, the poster disclaims any legal responsibility for the accuracy of the poster's response**