xfstests: generic/314 filter out total from ls -l output

xfstests: generic/314 filter out total from ls -l output

ls -l will show the nblocks for the directory, and this made it into the golden
output for 314.  The problem is nblocks is 0 for btrfs directories because we're
awesome, which makes us fail this test.  So filter out the "total blah" line of
ls -l so btrfs can pass this test too.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>