cleanup: fuel: Remove obsolete reap, dea, dha

cleanup: fuel: Remove obsolete reap, dea, dha

Old Fuel (up to and including Danube release) relied on a DEA/DHA
pair of configuration files, usually constructed based on information
collected from a manually deployed POD using a "reap" procedure.

Starting with Euphrates, Fuel will use the PDF as input, so DEA/DHA,
as well as reap data are now obsolete.

Some PODs (arm-pod5, lf-pod2) still have a "local_env" configuration
file, which is a leftover from old Fuel, but can only be dropped
after Fuel automatically detects the jumphost bridge names (either by
matching the IP addresses on the jumphost to the networks in PDF, or
by using a static mapping defined in a PDF companion file, e.g. IDF).

Remove all obsolete configuration, including useless directories.

Change-Id: I9eae2067d83347409c17126aadb19e3d6b95d4b6
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit f431509110f5c820a5b458e61d086d2fcc61a83a)