[cleanup] Misc

Closes #6288, Closes #7197, Closes #7265, Closes #7353, Closes #5773
Authored by: mikf, freezboltz, pukkandan

yt_dlp/downloader/common.py

@@ -49,7 +49,6 @@ class FileDownloader:
     verbose:            Print additional info to stdout.
     quiet:              Do not print messages to stdout.
     ratelimit:          Download speed limit, in bytes/sec.
-    continuedl:         Attempt to continue downloads if possible
     throttledratelimit: Assume the download is being throttled below this speed (bytes/sec)
     retries:            Number of times to retry for expected network errors.
                         Default is 0 for API, but 10 for CLI

yt_dlp/downloader/niconico.py

@@ -7,9 +7,9 @@ from .common import FileDownloader
 from .external import FFmpegFD
 from ..utils import (
     DownloadError,
-    str_or_none,
-    sanitized_Request,
     WebSocketsWrapper,
+    sanitized_Request,
+    str_or_none,
     try_get,
 )