[ISDN] include/linux/isdn.h: remove dead code

This patch remove the usage of a nonexisting kconfig variable.
Reported-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/isdn.h

@@ -16,14 +16,8 @@
 
 #include <linux/ioctl.h>
 
-#ifdef CONFIG_COBALT_MICRO_SERVER
-/* Save memory */
-#define ISDN_MAX_DRIVERS    2
-#define ISDN_MAX_CHANNELS   8
-#else
 #define ISDN_MAX_DRIVERS    32
 #define ISDN_MAX_CHANNELS   64
-#endif
 
 /* New ioctl-codes */
 #define IIOCNETAIF  _IO('I',1)