PIM DDL drop scripts shouldn't be executed when starting up the app

DDL drop scripts for PIM are not required to be executed when PIM application is started up as in case these database objects don't exist, these scripts will fail.

In case customer would like to drop/clean the DB schema at startup, they should explicitly pass this as parameter when running the application.

-Dquarkus.flyway.clean-at-start=true

If these DB objects already exist in the DB, there won't be any DDL script execution.