My mother in law gifted my wife a villa/house. My brother in law also got another property from his

My mother in law gifted my wife a villa/house. My brother in law also got another property from his father which he latter sold . My father in law died in 2005. But my brother in law continued to live in the house which belonged to my wife & promised to vacate the room soon.But after my mother in law's death he refused to vacate the room & went away to his new apartment by keeping the said room under lock &key & fully furnished.Now in the mean my time my wife transferred the property to me through a registered deed without any opposition.Now according to u I am the sole owner of the property. But what about that room under lock and key ? I dont want to go any further legal suite.I can sell the property at less price under encumbent.But I am hesitant because this is all property i have. can I use duplicate key and sell my brother in law's furnitures and make it encumbent free.He has no proof that locked the room. should I do it? will it get me into future legal trouble? free from any trouble is my 1st priority.