Running machine info even when MPI SIZE is 1

[opotowsky]

What is the change?

Removing the if MPI_SIZE > 1 from the _writeMachineInformation method.

Why is the change being made?

It was noticed a case with 1 rank wasn't getting the machine or system information printed to its log file. There seems to be no technical reason for this, so I'm proposing to remove that "requirement".

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Checklist

• This PR has only one purpose or idea.
• Tests have been added/updated to verify any new/changed code. None of these reporting utils are tested.

• The code style follows good practices.
• The commit message(s) follow good practices.

• The release notes have been updated if necessary.
• The documentation is still up-to-date in the doc folder.
• The dependencies are still up-to-date in pyproject.toml.