orangefs-bufmap.h: trim unused junk

#ifndef __ORANGEFS_BUFMAP_H

#define __ORANGEFS_BUFMAP_H

struct orangefs_bufmap;

int orangefs_bufmap_size_query(void);

int orangefs_bufmap_shift_query(void);

			      int buffer_index,

			      size_t size);

size_t orangefs_bufmap_copy_to_user_task_iovec(struct task_struct *tsk,

					   struct iovec *iovec,

					   unsigned long nr_segs,

					   struct orangefs_bufmap *bufmap,

					   int buffer_index,

					   size_t bytes_to_be_copied);

#endif /* __ORANGEFS_BUFMAP_H */