Remove deprecated Apis for libVLC 4.0

Deprecated APIs:

VLCAudio
- setMute:
VLCMedia
- parse, isParsed, synchronousParse
VLCMediaDiscoverer
- availableMediaDiscoverer, localizedName
VLCMediaPlayer
- titles, chaptersForTitleIndex:, countOfTitles, framesPerSecond, openVideoSubTitlesFromFile:
VLCMediaListPlayer
- playItemAtIndex
VLCStreamSession
VLCStreamOutput
VLCMediaLibrary

Edited Dec 16, 2018 by Jean-Baptiste Kempf

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