staging/lustre/llite: remove some cl wrappers

staging/lustre/llite: remove some cl wrappers

In llite remove the wrapper functions and macros:
  cl_i2info()
  cl_i2sbi()
  cl_iattr2fd()
  cl_inode_info
  cl_inode_mode()
  cl_inode_{a,m,c}time()
  cl_isize_{read,write,write_nolock}()

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12850
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>