removed unused lib, updated docstring for throw exceptions

[Frederik-Hartmann]

Hi! I created this PR via VS Code with the wrong title — sorry about that. The correct title should be:

Add option to throw exceptions in convert_dir

This PR relates to: #113 (comment)

Changes

1. Added an argument throw_exceptions to raise exceptions (the first exception encountered will be raised). Default is False for backwards compatibility.

2. Replaced traceback.print_exc() with logger.warning(exc, exc_info=True) to maintain error information while logging, as suggested in

   dicom2nifti/dicom2nifti/convert_dir.py

   Line 56 in d68253e

   except: # Explicitly capturing all errors here to be able to continue processing all the rest

   • Errors are always logged, even when throw_exceptions=True.

It would be great if you could merge this PR @abrys to allow the use of dicom2nifti in our project. Thanks a lot in advance and thanks for maintaining this open source lib! It is much appreciated!