Withdrawal of civil suit filed by myself how to do

I filed a civil suit to safeguard my plot of land from another party to restrain them from trying to take possession, now I have sold the land over two years ago and I want to withdraw the suit. The party who brought the land have refused to put the suit in their name, so I want to withdraw as they are using my name. I want to clear my name and also I have no interest in the matter now. I told the judge of my intentions and she said give an application if withdrawal. How do I do this, what is the format, and can I give to the court on any day regardless of the next date of the case? Who do I give it to? I have no lawyer.