Bug 28490: Comment out the relationship data removing DB update step

Bug 28490: Comment out the relationship data removing DB update step

These columns that were actively used to store non-patron guarantor
relationship info were dropped incorrectly. In a later patch the
relationship fields will be re-added.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Petro Vashchuk <stalkernoid@gmail.com>
Signed-off-by: Emmi Takkinen <emmi.takkinen@koha-suomi.fi>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
JD Amended patch: Add a "SKIP" note on the DBrev we commented out

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>