efi_test: get rid of pointless access_ok()

really, people - get_user(), copy_from_user(), memdup_user(), etc.
all fail if access_ok() does.

Signed-off-by: Al Viro <[e-mail]>

drivers/firmware/efi/test/efi_test.c

···
 		return 0;
 	}
 
-	if (!access_ok(src, 1))
-		return -EFAULT;
-
 	buf = memdup_user(src, len);
 	if (IS_ERR(buf)) {
 		*dst = NULL;
···
 static inline int
 get_ucs2_strsize_from_user(efi_char16_t __user *src, size_t *len)
 {
-	if (!access_ok(src, 1))
-		return -EFAULT;
-
 	*len = user_ucs2_strsize(src);
 	if (*len == 0)
 		return -EFAULT;
···
 {
 	size_t len;
 
-	if (!access_ok(src, 1))
-		return -EFAULT;
-
 	len = user_ucs2_strsize(src);
 	if (len == 0)
 		return -EFAULT;
···
 {
 	if (!src)
 		return 0;
-
-	if (!access_ok(dst, 1))
-		return -EFAULT;
 
 	return copy_to_user(dst, src, len);
 }