Ruby

Revert "[rubygems/rubygems] Fix gem pristine sometimes failing to pristine user installed gems"

This reverts commit a3edc4abc574b04bcacfae2af188cce7d27bfcf1.

That commit caused test failure with Windows platform.

• https://github.com/ruby/ruby/actions/runs/9289018414/job/25561871390
• https://github.com/ruby/ruby/actions/runs/9289018425/job/25561873060