Chennai (Tamil Nadu) [India], January 13 (ANI): Tamil Nadu Chief Minister MK Stalin on Saturday dismissed speculation that his son Udhayanidhi Stalin is being elevated to the Deputy CM post. M K Stalin in a letter addressed to the party workers said, “When youths across Tamil Nadu were getting ready for the Party Youth Wing Conference, few spread rumours about my health condition. I am in good health and vivacity. Working, working and working. ” He also added that “After this lie was shattered, rumours were being spread to create a sensation, that deputy CM post was going to be given (to Udhay…