Fixes EMNIST split and label issues (#2673)
Fixes EMNIST split and label issues (#2673)

* Add float support to ColorJitter

* Fix byclass EMNIST

* Fix bymerge, balance, letters EMNIST

* Fix whitespace indent

* Revert unrelated file changes

* Revert unrelated file changes

* Removing unnecessary type conversions.

* Removing the transform and adding dummy class instead.

Co-authored-by: Vasileios Vryniotis <e9ee0663849a728bc0d21a0b613cfa07b32d7f20@fb.com>
pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision