tomoyo_write_control(): get rid of pointless access_ok()

address is passed only to get_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

security/tomoyo/common.c

@@ -2662,8 +2662,6 @@ ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
 
 	if (!head->write)
 		return -EINVAL;
-	if (!access_ok(buffer, buffer_len))
-		return -EFAULT;
 	if (mutex_lock_interruptible(&head->io_sem))
 		return -EINTR;
 	head->read_user_buf_avail = 0;