LU-4629 liblustre: remove suspicious check

LU-4629 liblustre: remove suspicious check

Suspicious dereference of pointer 'inode' by passing argument 1 to
function 'llu_i2info' at line 387 before NULL check at line 391.

The pointer 'inode' can not be NULL. This checked on upper layer.

Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Change-Id: Iea1e4d46f9faccf74a895002a8640959d63c395a
Reviewed-on: http://review.whamcloud.com/9324
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>