Function deletes every object row and columns once and fits the MDS in object and returns the configuration. The deleted row is set to 0 in the configuration. Is meant for smacofx functions, but should also work for every smacof models.
object: Object of class smacofP if used as method or another object inheriting from smacofB. Note we assume the MDS model was fitted on a symmetric matrix/data frame or dist object
delta: the data (symmetric matrix, data frame or dist object)