Removing tutorials models

Revert "tf_upgrade_v2 on resnet and utils folders. (tensorflow#6154)" (…

…tensorflow#6162)

This reverts commit d6b2b83.

Fix PREPROC_HP_NUM_EVAL tag for MLPerf. (tensorflow#5717)

This tag should match EVAL_HP_NUM_NEG.

Removing research models

Removing research models.

Removing research models.

Add new import paths to mnist_tpu.py (tensorflow#4133)

* Add new import paths to mnist_tpu.py

This adds new import paths to mnist_tpu.py so individuals can check out the git repository and run `python mnist_tpu.py` without finagling with python import search paths.

* Fix lint errors

* Add disable= to pylint instructions

* Remove parent path

* Update comments

Removing research models.

Removing research models.

Removing research models