[repository] Drop the index on entities.type
It should be now only used in maintenance queries in checkintegrity. Those are
not worth maintaining it.
Closes #15538317
# Check the CW versions and add the entity only if needed ?
add_entity_type('CWSession')
rql('DELETE CWProperty X WHERE X pkey "system.version.pyramid"',
ask_confirm=False)
sql('DROP TABLE moved_entities')
sql('ALTER TABLE entities DROP COLUMN asource')
sql('ALTER TABLE entities DROP COLUMN extid')
sql('DROP INDEX entities_type_idx')
drop_entity_type('CWSourceSchemaConfig')