x86/mm: Remove unused DBG() macro

DBG() macro for CONFIG_DEBUG_PER_CPU_MAPS is unused.

Signed-off-by: Akinobu Mita <[e-mail]>
LKML-Reference: <[e-mail]>
Signed-off-by: Ingo Molnar <[e-mail]>

arch/x86/kernel/setup_percpu.c

···
 #include <asm/cpu.h>
 #include <asm/stackprotector.h>
 
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-# define DBG(fmt, ...) pr_dbg(fmt, ##__VA_ARGS__)
-#else
-# define DBG(fmt, ...) do { if (0) pr_dbg(fmt, ##__VA_ARGS__); } while (0)
-#endif
-
 DEFINE_PER_CPU(int, cpu_number);
 EXPORT_PER_CPU_SYMBOL(cpu_number);
 

arch/x86/mm/numa.c

···
 #include <linux/module.h>
 #include <linux/bootmem.h>
 
-#ifdef CONFIG_DEBUG_PER_CPU_MAPS
-# define DBG(x...) printk(KERN_DEBUG x)
-#else
-# define DBG(x...)
-#endif
-
 /*
  * Which logical CPUs are on which nodes
  */