net/macsonic: Drop redundant MACH_IS_MAC test

The MACH_IS_MAC test is redundant here because the platform device
won't get registered unless MACH_IS_MAC.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NFinn Thain <fthain@telegraphics.com.au>
Reviewed-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/natsemi/macsonic.c

@@ -311,9 +311,6 @@ static int mac_onboard_sonic_probe(struct net_device *dev)
 	int sr;
 	bool commslot = macintosh_config->expansion_type == MAC_EXP_PDS_COMM;
 
-	if (!MACH_IS_MAC)
-		return -ENODEV;
-
 	printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");
 
 	/* Bogus probing, on the models which may or may not have