tty: synclink_gt: remove redundant initialization of variable count

The variable count is being initialized with a value that is
never read and it is being updated later with a new value.  The
initialization is redundant and can be removed.
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210420105718.377086-1-colin.king@canonical.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/synclink_gt.c

@@ -4958,7 +4958,7 @@ static int loopback_test(struct slgt_info *info)
 #define TESTFRAMESIZE 20
 
 	unsigned long timeout;
-	u16 count = TESTFRAMESIZE;
+	u16 count;
 	unsigned char buf[TESTFRAMESIZE];
 	int rc = -ENODEV;
 	unsigned long flags;