fix: process video bug on unused else

The loop never uses break, so the else clause always executes.
However, since it iterates over a generator, the generator is already exhausted after the first pass... so the else block would iterate over nothing.

So, i believe the 'else' is redundant.

Author: rkados

supervision/utils/video.py

@@ -249,10 +249,6 @@ def callback(scene: np.ndarray, index: int) -> np.ndarray:
         ):
             result_frame = callback(frame, index)
             sink.write_frame(frame=result_frame)
-        else:
-            for index, frame in enumerate(video_frames_generator):
-                result_frame = callback(frame, index)
-                sink.write_frame(frame=result_frame)
 
 
 class FPSMonitor: