[MIPS] unexport copy_from_user_page()

No users for the copy_from_user_page() routine exist outside of the
core kernel code. Therefore, EXPORT_SYMBOL(copy_from_user_page) is
useless, and this patch removes it.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index c1b1978..ecd562d 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -263,9 +263,6 @@
 	}
 }
 
-EXPORT_SYMBOL(copy_from_user_page);
-
-
 #ifdef CONFIG_HIGHMEM
 unsigned long highstart_pfn, highend_pfn;