orangefs: remove detritus from struct orangefs_kiocb_s

	/* orangefs kernel operation type */

	struct orangefs_kernel_op_s *op;

	/* The user space buffers from/to which I/O is being staged */

	struct iovec *iov;

	/* number of elements in the iovector */

	unsigned long nr_segs;

	/* set to indicate the type of the operation */

	int rw;