LOGSEVERE and LOGNOTICE will deprecated in kodi/python addons

[phunkyfish]

Description:

Please replace with LOGFATAL and LOGINFO. They will be removed in a couple of weeks.

PR: https://github.com/xbmc/xbmc/pull/18346 Forum Post: https://forum.kodi.tv/showthread.php?tid=353818

Details:

• Add-on version: Latest
• Kodi version: master
• OS Platform: All
• Hardware: All

Checklist

• [ ] I have included a link to a log (or at the very least a link to a forum post with a log) from a session that had the issue
• [ ] I have added appropriate GitHub labels

[MrPumo]

Proposed PR https://github.com/plexinc/plex-for-kodi/pull/328