ARM: OMAP4: Remove un-used do_wfi() macro.

With OMAP4 suspend, idle and hotplug series, we no longer need
do_wfi() macro.

Remove the same.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: NJean Pihet <j-pihet@ti.com>
Reviewed-by: NKevin Hilman <khilman@ti.com>
Tested-by: NVishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: NKevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/common.h

@@ -158,17 +158,6 @@ void omap3_intc_resume_idle(void);
 void omap2_intc_handle_irq(struct pt_regs *regs);
 void omap3_intc_handle_irq(struct pt_regs *regs);
 
-/*
- * wfi used in low power code. Directly opcode is used instead
- * of instruction to avoid mulit-omap build break
- */
-#ifdef CONFIG_THUMB2_KERNEL
-#define do_wfi() __asm__ __volatile__ ("wfi" : : : "memory")
-#else
-#define do_wfi()			\
-		__asm__ __volatile__ (".word	0xe320f003" : : : "memory")
-#endif
-
 #ifdef CONFIG_CACHE_L2X0
 extern void __iomem *omap4_get_l2cache_base(void);
 #endif