update mpv config and remove osc.conf

.config/mpv/script-opts/osc.conf

@@ -1,19 +0,0 @@
-showwindowed=yes
-showfullscreen=yes
-scalewindowed=1
-scalefullscreen=1
-scaleforcedwindow=2
-vidscale=yes
-hidetimeout=1000
-fadeduration=500
-minmousemove=3
-iamaprogrammer=yes
-font='mpv-osd-symbols'
-seekrangealpha=128
-title='${media-title}'
-showtitle=yes
-visibility=auto
-windowcontrols=auto
-volumecontrol=yes
-processvolume=yes
-language=eng