winealsa.drv: Remove call to snd_pcm_drain.

snd_pcm_drain can cause a deadlock if in the wrong state, and 
snd_pcm_drop below does the same thing.

dlls/winealsa.drv/waveout.c

@@ -322,9 +322,6 @@ static	void	wodPlayer_Reset(WINE_WAVEDEV* wwo, BOOL reset)
     int                         err;
     TRACE("(%p)\n", wwo);
 
-    /* flush all possible output */
-    snd_pcm_drain(wwo->pcm);
-
     wodUpdatePlayedTotal(wwo, NULL);
     /* updates current notify list */
     wodPlayer_NotifyCompletions(wwo, FALSE);