1204 Reduce unnecessary logs and prints when running the examples

[HenrZu]

Changes and Information

Please briefly list the changes (main added features, changed items, or corrected bugs) made:

• Remove unnecessary logs/prints in the example dir which leads to an chaotic CI log for the example runs
• CI is now faster and clearer
• before 16.355 lines / ~110sec runtime -> now: 950 lines / 45sec runtime (release, min)

If need be, add additional information and what the reviewer should look out for in particular:

Merge Request - Guideline Checklist

Please check our git workflow. Use the draft feature if the Pull Request is not yet ready to review.

Checks by code author

• Every addressed issue is linked (use the "Closes #ISSUE" keyword below)
• New code adheres to coding guidelines
• No large data files have been added (files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• Tests are added for new functionality and a local test run was successful (with and without OpenMP)
• Appropriate documentation for new functionality has been added (Doxygen in the code and Markdown files if necessary)
• Proper attention to licenses, especially no new third-party software with conflicting license has been added
• (For ABM development) Checked benchmark results and ran and posted a local test above from before and after development to ensure performance is monitored.

Checks by code reviewer(s)

• Corresponding issue(s) is/are linked and addressed
• Code is clean of development artifacts (no deactivated or commented code lines, no debugging printouts, etc.)
• Appropriate unit tests have been added, CI passes, code coverage and performance is acceptable (did not decrease)
• No large data files added in the whole history of commits(files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• On merge, add 2-5 lines with the changes (main added features, changed items, or corrected bugs) to the merge-commit-message. This can be taken from the briefly-list-the-changes above (best case) or the separate commit messages (worst case).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.13%. Comparing base (34a0277) to head (603c299).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1205   +/-   ##
=======================================
  Coverage   97.13%   97.13%           
=======================================
  Files         149      149           
  Lines       13999    13999           
=======================================
  Hits        13598    13598           
  Misses        401      401           

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[reneSchm]

Code looks okay, but

Also this should maybe be added to the PR template.

is not addressed here, so this PR does not resolve the linked issue.

[HenrZu]

Code looks okay, but

Also this should maybe be added to the PR template.

is not addressed here, so this PR does not resolve the linked issue.

Good comment. Thank you for the review.
I added to the coding guidelines:
Avoid producing unnecessarily long outputs. Ensure that all output is concise and limited to relevant information.

I decided against including this in the template because I don't want to overload it.