[cleanup] Deprecate more compat functions (#11439)

Authored by: seproDev

yt_dlp/extractor/common.py

@@ -25,7 +25,6 @@ import xml.etree.ElementTree
 from ..compat import (
     compat_etree_fromstring,
     compat_expanduser,
-    compat_os_name,
     urllib_req_to_req,
 )
 from ..cookies import LenientSimpleCookie
@@ -1029,7 +1028,7 @@ class InfoExtractor:
         filename = sanitize_filename(f'{basen}.dump', restricted=True)
         # Working around MAX_PATH limitation on Windows (see
         # http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx)
-        if compat_os_name == 'nt':
+        if os.name == 'nt':
             absfilepath = os.path.abspath(filename)
             if len(absfilepath) > 259:
                 filename = fR'\\?\{absfilepath}'