Re-enable skipped unit tests (#3939)
* fix skipped tests due to bad version check util function
* revert local changes in EP size
* remove added dummy test file
* refactor torch version check function
* Update util.py
* fix for moe test memory leak
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Co-authored-by: Logan Adams <114770087+loadams@users.noreply.github.com>
Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>