Just for the sake of visa do not take any medications. Old healed lesions are common and do not require any intervention. If they are getting affected by recurrent infections then they can be surgically removed but not otherwise.
You can visit Pulmonary medicine
department in Government hospital / medical college and after evaluation by them, you can get it certified by them that "you do not have any active Pulmonary Tuberculosis
at present". The same certificate can be attached and submitted for visa purpose.