Closing a business

We have maintained a business license for quite a few years, but for the last 5 or so we haven't deducted much of anything as our "earnings" have been under $200.  We are essentially retired.  If I don't claim any expenses can I simply put the small income from writing in miscellaneous income and delete the business section?  I am not sure if I need to "officially close out our business with IRS or what.  Any insight will be most welcome.  Thank you in advance.