LU-5030 util: delete no longer functional lltrack_stats application

LU-5030 util: delete no longer functional lltrack_stats application

While cleaning up the lustre utilites to remove direct
procfs access one of the application lltrack_stats had
to be updated. While testing I discovered this application
actually calls a external perl script llstat.pl which
was removed a very long time ago which means this app
doesn't even work. Since this is the case we can just
delete this non-functional application.

Change-Id: I39189393060d592272dd7112904cd598912d8271
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: http://review.whamcloud.com/17904
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Frank Zago <fzago@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>