Rely on the :environment task for loading all models
Rely on the :environment task for loading all models

Previously we had a special :load_models task but
that seems to not play well with applications that
alter ActiveSupport::Dependencies.load_paths for
example from within an initializer. Since depending
on :environment alone now properly loads up all the
models too, it should be safe to remove :load_models
altogether.

datamapper/dm-rails