Remove redundant variable in function

The `count` variable is not used in the function's code

Author: natravedrova

site/en/tutorials/load_data/video.ipynb

@@ -577,7 +577,6 @@
         "      An NumPy array of frames in the shape of (n_frames, height, width, channels).\n",
         "  \"\"\"\n",
         "  # Read each frame by frame\n",
-        "  count = 0\n",
         "  result = []\n",
         "  src = cv2.VideoCapture(str(video_path))  \n",
         "\n",