ALSA: rawmidi: remove variable dest_frames

Variable dest_frames is just being incremented and it's never used
anywhere else. The variable and the increment are redundant so
remove it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20221024130415.2155860-1-colin.i.king@gmail.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/rawmidi.c

@@ -1050,7 +1050,6 @@ static int receive_with_tstamp_framing(struct snd_rawmidi_substream *substream,
 	struct snd_rawmidi_runtime *runtime = substream->runtime;
 	struct snd_rawmidi_framing_tstamp *dest_ptr;
 	struct snd_rawmidi_framing_tstamp frame = { .tv_sec = tstamp->tv_sec, .tv_nsec = tstamp->tv_nsec };
-	int dest_frames = 0;
 	int orig_count = src_count;
 	int frame_size = sizeof(struct snd_rawmidi_framing_tstamp);
 
@@ -1077,7 +1076,6 @@ static int receive_with_tstamp_framing(struct snd_rawmidi_substream *substream,
 		runtime->avail += frame_size;
 		runtime->hw_ptr += frame_size;
 		runtime->hw_ptr %= runtime->buffer_size;
-		dest_frames++;
 	}
 	return orig_count - src_count;
 }