MIPS: Remove duplicate includes

These duplicate includes have been found with scripts/checkincludes.pl
but they have been removed manually to avoid removing false positives.

Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17920/
Signed-off-by: James Hogan <jhogan@kernel.org>

arch/mips/mm/init.c

@@ -30,7 +30,6 @@
 #include <linux/hardirq.h>
 #include <linux/gfp.h>
 #include <linux/kcore.h>
-#include <linux/export.h>
 #include <linux/initrd.h>
 
 #include <asm/asm-offsets.h>
@@ -46,7 +45,6 @@
 #include <asm/pgalloc.h>
 #include <asm/tlb.h>
 #include <asm/fixmap.h>
-#include <asm/maar.h>
 
 /*
  * We have up to 8 empty zeroed pages so we can map one of the right colour