Remove unused and unmaintained modules

[jcfr]

Thanks for updating these. We are indeed still using these regularly and though some are outdated and do not need to be maintained (from our end): 3D4DImageConversion, DTITensorNormalization, DWI_NIFTINRRDCONVERSION, ImageNoise, anything in Unsupported and one of the curve comparison (not sure which is right one of the 2). Thanks also for updating the dtiprocesstoolkit

_Originally posted by @styner in https://github.com/NIRALUser/niral_utilities/issues/30#issuecomment-1043409452_

The following modules should be removed and associated external project archived.

Ideally, the relevant README files should be updated to:

• include History section summarizing when each was functionality was added and by who
• which tools can be used to perform similar operation

List of modules to retire:

• [ ] 3D4DImageConversion
  • Integrated in CMakeLists.txt here. See also https://github.com/NIRALUser/3D4DImageConversion
• [ ] DTITensorNormalization
• [ ] DWI_NiftiNrrdConversion
• [ ] ImageNoise
  • Integrated in CMakeLists.txt here. See also https://github.com/NIRALUser/ImageNoise.git
• [ ] Unsupported/CorrespondenceEvaluator
• [ ] Unsupported/DMDBiomarkerTool
• [ ] Unsupported/IntensityRescaler
• [ ] Unsupported/TextureBiomarkerTool
• [ ] Unsupported/TransformDeformationField

[jcfr]

@styner Did we properly capture the list of functionalities that could be retried ?

[styner]

Yes, these can be retired