MIPS: mips64/interrupt.c: remove superfluous include

Nothing is used from asm/mipsregs.h.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>

arch/mips/cpu/mips64/interrupts.c

@@ -6,7 +6,6 @@
  */
 
 #include <common.h>
-#include <asm/mipsregs.h>
 
 void enable_interrupts(void)
 {