paaudio: remove unneeded code

Commit baea032e "audio/paaudio: fix ignored buffer_length setting"
added code to handle buffer_length defaults. This was unnecessary
because the audio_buffer_* functions in audio/audio.c already handle
this. Remove the unneeded code.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 9315afe5-5958-c0b4-ea1e-14769511a9d5@t-online.de
Message-Id: <20210110100239.27588-16-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio/paaudio.c

@@ -539,8 +539,7 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,
 
     audio_pcm_init_info (&hw->info, &obt_as);
     hw->samples = audio_buffer_samples(
-        qapi_AudiodevPaPerDirectionOptions_base(ppdo),
-        &obt_as, ppdo->buffer_length);
+        qapi_AudiodevPaPerDirectionOptions_base(ppdo), &obt_as, 46440);
 
     return 0;
 
@@ -587,8 +586,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
 
     audio_pcm_init_info (&hw->info, &obt_as);
     hw->samples = audio_buffer_samples(
-        qapi_AudiodevPaPerDirectionOptions_base(ppdo),
-        &obt_as, ppdo->buffer_length);
+        qapi_AudiodevPaPerDirectionOptions_base(ppdo), &obt_as, 46440);
 
     return 0;
 
@@ -738,10 +736,6 @@ static void qpa_volume_in(HWVoiceIn *hw, Volume *vol)
 static int qpa_validate_per_direction_opts(Audiodev *dev,
                                            AudiodevPaPerDirectionOptions *pdo)
 {
-    if (!pdo->has_buffer_length) {
-        pdo->has_buffer_length = true;
-        pdo->buffer_length = 46440;
-    }
     if (!pdo->has_latency) {
         pdo->has_latency = true;
         pdo->latency = 15000;