remove src folder

data_flow/__init__.py

data_flow/dicom_operations.py

data_flow/itk_operations.py

data_flow/itk_transform_operations.py

data_flow/nifti_operations.py

intensity_modification/__init__.py

mri_specific_operations/__init__.py

segmentation_quality_measures/__init__.py

...n_quality_measures/information_theoretic_based_metrics.py

segmentation_quality_measures/prepare_tensors.py

...tation_quality_measures/spatial_distance_based_metrics.py

...ntation_quality_measures/spatial_overlap_based_metrics.py

spatial_transformation/__init__.py

spatial_transformation/crop_image.py

src/spatial_transformation/__init__.py

visualization/__init__.py

visualization/color_definitions.py

visualization/visualize_mri_data.py