audio/adlib: drop ts_helper HWVoice field

Previous commits made this dead code.

Reviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>

audio/audio.c

@@ -1240,7 +1240,6 @@ static void audio_run_out(AudioBackend *s)
 #endif
 
         if (played) {
-            hw->ts_helper += played;
             audio_capture_mix_and_clear (hw, prev_rpos, played);
         }
 
@@ -1320,7 +1319,6 @@ static void audio_run_in(AudioBackend *s)
 
         min = audio_pcm_hw_find_min_in (hw);
         hw->total_samples_captured += captured - min;
-        hw->ts_helper += captured;
 
         for (sw = hw->sw_head.lh_first; sw; sw = sw->entries.le_next) {
             sw->total_hw_samples_acquired -= min;

audio/audio_int.h

@@ -77,7 +77,6 @@ typedef struct HWVoiceOut {
     struct audio_pcm_info info;
 
     f_sample *clip;
-    uint64_t ts_helper;
 
     STSampleBuffer mix_buf;
     void *buf_emul;
@@ -99,7 +98,6 @@ typedef struct HWVoiceIn {
     t_sample *conv;
 
     size_t total_samples_captured;
-    uint64_t ts_helper;
 
     STSampleBuffer conv_buf;
     void *buf_emul;