MIPS: N32: Remove unused defines.

Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/kernel/scall64-n32.S

@@ -17,12 +17,6 @@
 #include <asm/thread_info.h>
 #include <asm/unistd.h>
 
-/* This duplicates the definition from <linux/sched.h> */
-#define PT_TRACESYS	0x00000002	/* tracing system calls */
-
-/* This duplicates the definition from <asm/signal.h> */
-#define SIGILL		4		/* Illegal instruction (ANSI).  */
-
 #ifndef CONFIG_MIPS32_O32
 /* No O32, so define handle_sys here */
 #define handle_sysn32 handle_sys