tello: remove commentted out lines from video example

Signed-off-by: Ron Evans <[email protected]>

examples/tello_video.go

@@ -3,7 +3,8 @@
 // Do not build by default.
 
 /*
-You must have ffmpeg and ffplay installed in order to run this code.
+You must have ffmpeg and ffplay installed in order to run this code. it will connect to the Tello
+and then open a window using ffplay showing the streaming video.
 
 How to run
 
@@ -25,7 +26,6 @@ func main() {
 	drone := tello.NewDriver("8890")
 
 	work := func() {
-		// launch ffplay and get it ready to display video
 		ffplay := exec.Command("ffplay", "-i", "pipe:0")
 		ffplayIn, _ := ffplay.StdinPipe()
 		if err := ffplay.Start(); err != nil {
@@ -43,12 +43,6 @@ func main() {
 
 		drone.On(tello.VideoFrameEvent, func(data interface{}) {
 			pkt := data.([]byte)
-			// if len(pkt) > 6 && pkt[0] == 0x00 && pkt[1] == 0x00 && pkt[2] == 0x00 && pkt[3] == 0x01 {
-			// 	nalType := pkt[6] & 0x1f
-			// 	//fmt.Println("nal type = ", nalType)
-			// }
-
-			//fmt.Printf("Writing %d bytes\n", len(pkt))
 			if _, err := ffplayIn.Write(pkt); err != nil {
 				fmt.Println(err)
 			}