ALSA: emu10k1: remove redundant assignment to tmp

The assignment to variable tmp is redundant as the value is never
read and a new value is assigned to tmp in the following for-loop,
so remove the assignment.
Cleans up clang warning: Value stored to 'tmp' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/emu10k1/emuproc.c

@@ -280,7 +280,6 @@ static void snd_emu10k1_proc_rates_read(struct snd_info_entry *entry,
 	struct snd_emu10k1 *emu = entry->private_data;
 	unsigned int val, tmp, n;
 	val = snd_emu10k1_ptr20_read(emu, CAPTURE_RATE_STATUS, 0);
-	tmp = (val >> 16) & 0x8;
 	for (n = 0; n < 4; n++) {
 		tmp = val >> (16 + (n*4));
 		if (tmp & 0x8) snd_iprintf(buffer, "Channel %d: Rate=%d\n", n, samplerate[tmp & 0x7]);