I was doing Tinker Toms missions where I had to place MILA on top of various buildings, I never finished doing the quest of course. I sided with the Institute and killed the Railroad and Brotherhood Of Steel, I even killed Tinker Tom, well the problem is that his quest is still active, I have placed MILA and its telling me to speak with him, problem is he is dead so I cant complete it, any suggestions on how to get rid of it?