fix(examples): Simplify skip logic in yolo example

Signed-off-by: Miguel A. Cabrera Minagorri <devgorri@gmail.com>

examples/yolo/process.py

@@ -2,27 +2,13 @@
 import time
 
 def hook(frame, context):
-    start = time.time()
     rgb_frame = frame['original']
     model = context['model']
     input_fps = frame['fps']
-    raw_samples = pipeless_kvs_get('samples')
-    samples = int(raw_samples) if raw_samples else 0
-    raw_avg_time = pipeless_kvs_get('avg_process_time')
-    avg_time = float(raw_avg_time) if raw_avg_time else 0
-
-    if should_skip_frame(avg_time, input_fps):
-        print('Skipping frame to maintain real-time')
+    delay = time.time() - frame['input_ts']
+    if delay > 1 / input_fps:
+       print('Skipping frame to maintain real-time')
     else:
         prediction = next(model(rgb_frame, stream=True))
         bboxes = prediction.boxes.data.tolist() if prediction.boxes else []
         frame['inference_output'] = np.array(bboxes, dtype="float32")
-
-    exec_time = time.time() - start
-    new_avg_time = (avg_time * samples + exec_time) / (samples + 1)
-    pipeless_kvs_set('samples', samples + 1)
-    pipeless_kvs_set('avg_process_time', new_avg_time)
-
-def should_skip_frame(avg_execution_time, desired_fps):
-    max_process_time = 1 / desired_fps
-    return avg_execution_time > max_process_time