ALSA: echoaudio: remove redundant assignment to variable i

The variable i is being assigned a value that is never read, it
is being re-assigned in the following for-loop. The assignment is
redundant and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20220405135412.199251-1-colin.i.king@gmail.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/echoaudio/midi.c

@@ -124,7 +124,6 @@ static int midi_service_irq(struct echoaudio *chip)
 		return 0;
 
 	/* Get the MIDI data from the comm page */
-	i = 1;
 	received = 0;
 	for (i = 1; i <= count; i++) {
 		/* Get the MIDI byte */