Delete src/rail/example_package directory

[ltoribiosc]

Problem & Solution Description (including issue #)

Code Quality

• My code follows the code style of this project
• I have written unit tests or justified all instances of #pragma: no cover; in the case of a bugfix, a new test that breaks as a result of the bug has been added
• My code contains relevant comments and necessary documentation for future maintainers; the change is reflected in applicable demos/tutorials (with output cleared!) and added/updated docstrings use the NumPy docstring format
• Any breaking changes, described above, are accompanied by backwards compatibility and deprecation warnings

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.55%. Comparing base (0a970e7) to head (1d49f78).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main       #8   +/-   ##
=======================================
  Coverage   99.55%   99.55%           
=======================================
  Files           1        1           
  Lines         223      223           
=======================================
  Hits          222      222           
  Misses          1        1           

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[ltoribiosc]

I have deleted the example template folder. I have also run the example and it works correctly.

All 6 checks worked correctly. Only codecov shows 99.5% instead of 100%. I don't know if this is normal.

Please check that everything is correct before accepting the PR.

[sschmidt23]

version looks like it is now being read correctly from tagged version. I also deleted the example notebook and examples/ directory, as we don't want two versions that could get out of sync, and there is now a copy in the main RAIL repo.