Revert "PUBDEV-7720 use folds = 1 in nModelsInParallel"
Revert "PUBDEV-7720 use folds = 1 in nModelsInParallel"

This reverts commit e7c5eb3bcf48286ea5533b0e97035a3d0996e050.

h2oai/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,michalkurka/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3