Bug 10927: remove disused C4::Utils module

Bug 10925 removes the last call to C4::Utils.
The module becomes useless and can be deleted.

Verify that t/db_dependent/Context.t still successfully passes.
git grep hashdump
git grep maxwidth

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Passes koha-qa.pl, no subs from the module are used anywhere

Signed-off-by: Galen Charlton <gmc@esilibrary.com>