staging: sm750fb: Remove header files

Remove duplicate include files. Found using includecheck.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/sm750fb/sm750.c

@@ -13,8 +13,6 @@
 #include <linux/vmalloc.h>
 #include <linux/pagemap.h>
 #include <linux/screen_info.h>
-#include <linux/vmalloc.h>
-#include <linux/pagemap.h>
 #include <linux/console.h>
 #include <asm/fb.h>
 #include "sm750.h"