Make jit a kwarg with default value False in 4 models (#1497)
Summary:
The superclass already has a default of False for the `jit` argument. Keep it optional.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1497
Reviewed By: xuzhao9
Differential Revision: D44268932
Pulled By: janeyx99
fbshipit-source-id: 0dbd7b92572870aa3dbd114052523879bc7fbf2f
