javadoc: Keys don't need to be registered
* Sponge. If custom keys for {@link DataHolder}s is desired to be
* persisted, a {@link DataRegistration} is required.
*
- * <p>Registration of a custom created {@link Key} is required through
- * {@link RegisterRegistryValueEvent}. The
- * registration of a {@link DataRegistration} is done separately.
- * </p>
- *
* @see DataRegistration
* @return The key builder
*/
