I have a problem with my camera pointing towards a point of interest. I mistakenly entered the point of interest then deleted it. But the camera keeps pointing towards the POI even after I deleted the flight plan and started again. Any ideas anyone 
Welcome to the forum.
A point of interest is just one way of specifying both the heading of the aircraft and the gimbal pitch angle. If you remove the POI, the heading and gimbal pitch angle may remain until you either specify a different POI, heading, or gimbal pitch angle.