scalability_data: remove

This business template is not used and contain a preference referencing
non existing paths, which causes errors in coding style test with
test_moduleListMethod that cannot display accounting module, because
preference is set to group/my_group which does not exist.

Instead of trying to fix, let's remove the business template if it's not
used.
3 jobs for fix/project-pylint in 0 seconds
Status Job ID Name Coverage
  External
failed ERP5.CodingStyleTest-TestRunner1

01:34:54

passed ERP5.PerformanceTest-TestRunner1

00:32:37

failed ERP5.UnitTest-TestRunner1

02:08:08