Restore dropped assertion messages across the test suite

[nickbianco]

A follow up based on feedback in #4458.

Brief summary of changes

• Restores the test assertion messages lost in Remove ASSERT and replace usages with OPENSIM_ASSERT_ALWAYS #4458.
• Drive-by: delete calibrated_pelvis_rot.osim which gets generated by testOpenSense.cpp, but is not a requirement to run the test. Also comments out the output_model_file property value in the test setup file to prevent further file generation.

Testing I've completed

Looking for feedback on...

Ran tests locally + CI.

CHANGELOG.md (choose one)

• no need to update because...internal test updates.

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[adamkewley]

@adamkewley reviewed 16 files and all commit messages, and made 2 comments.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on nickbianco).

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OpenSim/Simulation/tests/testFrames.cpp line 137 at r1 (raw file):

            rod1.getMobilizedBodyIndex()
                    == offsetFrame->getMobilizedBodyIndex() &&
            "testPhysicalOffsetFrameOnBody(): incorrect MobilizedBodyIndex");

Is the function name necessary in the messages? Cant the assertion macro pull this out with FUNC or similar?

[adamkewley]

@adamkewley reviewed 4 files and all commit messages, and made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on nickbianco).