Remove extraneous variables in windows report stats step (#56596)
Summary:
Testing that the CIRCLE variables in the Windows test CI report stats step aren't needed.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/56596
Test Plan: CI
Reviewed By: samestep
Differential Revision: D27948983
Pulled By: janeyx99
fbshipit-source-id: 71f2ca08246eea7580e31fb632612b205fb995fc
