Remove use of --user-openjdk-build-root-directory now JDK-8326685 backported

[andrew-m-leonard]

JDK-8326685 provides an official fix for the Linux debug map reproducible build issue, this is now backported to jdk-21.0.4, and the workaround to use a user build folder is not required.
The workaround was incorrectly applied to Windows, which then caused a subsequent non-reproducible issue due to relative path building not being used.

Fixes adoptium/temurin-build#3790

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[andrew-m-leonard]

run tests

[eclipse-temurin-bot]

 PR TESTER RESULT 

✅ All pipelines passed! ✅

[steelhead31]

Looks ok.

[sxa]

Noting that the logic being removed was originally added in https://github.com/adoptium/ci-jenkins-pipelines/pull/998/files
I presume this is not a Windows-specific change given that JDK-8326685 appears to only mention Linux?

Also, is it still possible to reproduce the latest JDk21/22 releases on Windows if this change isn't included (i.e. with the options included in the July SBOMs)?

[andrew-m-leonard]

Noting that the logic being removed was originally added in https://github.com/adoptium/ci-jenkins-pipelines/pull/998/files I presume this is not a Windows-specific change given that JDK-8326685 appears to only mention Linux?

Also, is it still possible to reproduce the latest JDk21/22 releases on Windows if this change isn't included (i.e. with the options included in the July SBOMs)?

It was introduced in this PR e297546
the one you refer to was a builds break fix.
Yes, it should never have been used for Windows

Yes, reproducing July Windows using the release jobs and July v2024.07.01 branch will work fine.