[hls] Remove useless u porefixes
[http] Modernize
[mplayer] Modernize
[academicearth] Modernize
[update] Remove useless import
[francetv] PEP8
[addanime] Modernize
[aparat] Modernize
[appletrailers] Modernize
[youtube] Remove useless u prefixes
[subtitles] Modernize
[hotnewhiphop] Modernize
[muzu] Modernize
[redtube] Modernize
[sohu] Modernize
[trilulilu] Modernize
[tvp] Modernize
[videofyme] Modernize
[videopremium] Modernize
[ffmpeg] Modernize