Inefficient procedure ecfVersion_DeleteByObjectIds

Description

The procedure ecfVersion_DeleteByObjectIds may perform poorly in some scenarios.

It

1. Loads affected classes (MetaObjectId, MetaClassId and WorkId).
2. Inserts them into a temp table.
3. Uses a cursor to iterate through that.
4. Passes the rows one by one to mdpsp_sys_DeleteMetaKeyObjects, which loads the MetaKey and deletes it.

This is hugely inefficient. It should be handled by set processing.