Support no image size in PascalVOC loader (#862)
Support no image size in PascalVOC loader (#862)

* Support no image size in PascalVOC loader

* Remove default image size, to support better OD training pipeline

* Update default pascal voc loader to work

* Remove shuffle arg

* Add shuffle files
keras-team/keras-cv,keras-team/keras-cv,keras-team/keras-cv