remove WM5 from headers

[timosachsenberg]

Description

To prevent symbols being exported.
RegressionUtils.h was removed for same reasons (did not safe code anyways).
As well as the test which was not run anyways.

Checklist:

• Make sure that you are listed in the AUTHORS file
• Add relevant changes and new features to the CHANGELOG file
• I have commented my code, particularly in hard-to-understand areas
• New and existing unit tests pass locally with my changes
• Updated or added python bindings for changed or new classes. (Tick if no updates were necessary.)

How can I get additional information on failed tests during CI:

If your PR is failing you can check out

• http://cdash.openms.de/index.php?project=OpenMS and look for your PR. If you click in the column that lists the failed tests you will get detailed error messages.
• Or click on the action: e.g., for clang-format linting

Note:

• Once you opened a PR try to minimize the number of pushes to it as every push will trigger CI (automated builds and test) and is rather heavy on our infrastructure (e.g., if several pushes per day are performed).

Advanced commands (admins / reviewer only):

• /rebase will try to rebase the PR on the current develop branch.
• /reformat (experimental) applies the clang-format style changes as additional commit
• setting the label NoJenkins will skip tests for this PR on jenkins (saves resources e.g., on edits that do not affect tests)

[jpfeuffer]

https://stackoverflow.com/questions/60463014/cmath-error-on-macos-c17-call-to-abs-ambiguous
please leave fabs

[timosachsenberg]

https://stackoverflow.com/questions/60463014/cmath-error-on-macos-c17-call-to-abs-ambiguous please leave fabs

I thought this only holds for integral types and not for double. Are you sure this causes an error? Or is cmath missing?

[jpfeuffer]

Yes it's in Jenkins.
Abs only works for floats since c17 and apparently not in all versions of Apples libc++ (when both cmath and cstdlib are included or something like that)

[jpfeuffer]

I think it has to be std::fabs

[jpfeuffer]

Should be fine. Windows out of space.