Removed text regarding running turtlesim headless
Removed text regarding running turtlesim headless

Now that we have closed-loop control it is no longer necessary to run turtlesim headless when running over a remote connection. X-forwarding works fine now.
chfritz/turtles_draw,chfritz/turtles_draw,chfritz/turtles_draw,chfritz/turtles_draw,chfritz/turtles_draw