Breaking Change: removed deprecated roles

The following roles have been removed as a preperation for future changes in
ansible-oracle. Some of them were in a really old state and some of them are
replaced by the *-manage-* roles.

Removed roles:

- oraasm-createdg - replaced by oraasm-manage-diskgroups
- oradb-create - replaced by oradb-manage-db
- oradb-delete - replaced by oradb-manage-db
- oradb-failover - should be implemented in oraswgi-install -no replacement availible
- oraswgi-clone - not working with current Oracle versions, no replacement availible

Author: Rendanic