[PATCH] ppc: remove duplicate define

The MMCR0_PMXE is already defined in reg.h, so no need to redefine it here.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc/kernel/perfmon.c

@@ -47,7 +47,6 @@ static void dummy_perf(struct pt_regs *regs)
 
 #else
 /* Ensure exceptions are disabled */
-#define MMCR0_PMXE      (1UL << (31 - 5))
 
 static void dummy_perf(struct pt_regs *regs)
 {