Remove audio_beos entries in indevs.texi and output.devs, BeOS audio

support has been dropped.

Originally committed as revision 24725 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/indevs.texi

@@ -51,10 +51,6 @@ ffmpeg -f alsa -i hw:0 alsaout.wav
 For more information see:
 @url{http://www.alsa-project.org/alsa-doc/alsa-lib/pcm.html}
 
-@section audio_beos
-
-BeOS audio input device.
-
 @section bktr
 
 BSD video input device.

doc/outdevs.texi

@@ -22,10 +22,6 @@ A description of the currently available output devices follows.
 
 ALSA (Advanced Linux Sound Architecture) output device.
 
-@section audio_beos
-
-BeOS audio output device.
-
 @section oss
 
 OSS (Open Sound System) output device.