Refactor OrderedDict to dict (#113234)
Summary:
In Python3 all dicts are ordered.
X-link: https://github.com/pytorch/pytorch/pull/113234
Approved by: https://github.com/oulgen, https://github.com/lezcano
Reviewed By: PaliC
Differential Revision: D51140113
Pulled By: jansel
fbshipit-source-id: dfd81dbdb3b14c0d011bbc25662f30e6818fddfb
