Remove workaround for the broken sc.ini on Windows

[MoonlightSentinel]

The configuration file was fixed upstream by dlang/dmd#13611

[dlang-bot]

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[MoonlightSentinel]

Seems like I've found a bug in Github Actions' reuseable workflows. Starting the tests for this PR failed with the following error:

error parsing called workflow "./.github/workflows/build_release_template.yml@"

But the file exists in both master and the PR branch (which is based on current master). The workflow also started correctly for the push to master...

Reported here

[MoonlightSentinel]

GA works now and all tests passed