mpv: update dependencies...again

mpv/Pkgfile

@@ -1,12 +1,12 @@
 # Description: General Purpose video player based on MPlayer and mplayer2
 # URL:         http://mpv.io
 # Maintainer:  Maximilian Dietrich, dxm at openmailbox dot org
-# Depends on:  libass ffmpeg docutils python
+# Depends on:  ffmpeg docutils
 # Nice to have: libquvi libdvdread libdvdnav
 
 name=mpv
 version=0.8.3
-release=3
+release=4
 source=(https://github.com/$name-player/$name/archive/v$version.tar.gz)
 
 build () {