code: @Indexable(type = IndexableType.DELETE)
  	@Override
  	public CPDisplayLayout deleteCPDisplayLayout(long CPDisplayLayoutId)
  		throws PortalException {
  		return cpDisplayLayoutPersistence.remove(CPDisplayLayoutId);
  	}
docs: Deletes the cp display layout with the primary key from the database. Also notifies the appropriate model listeners.
  
  @param CPDisplayLayoutId the primary key of the cp display layout
  @return the cp display layout that was removed
  @throws PortalException if a cp display layout with the primary key could not be found