Provides support for field data purge after mass deletion. File core/modules/field/field.purge.inc
field_purge_batch($batch_size, $field_storage_uuid = NULL) Purges a batch of deleted Field API data, field
field_purge_field(FieldConfigInterface $field) Purges a field record from the database. This
Cleans up after Field API bulk deletion operations. Field API provides functions for deleting data attached to individual entities as well as
field_purge_field_storage(FieldStorageConfigInterface $field_storage) Purges a field record from the database