[REF] Stop using deprecated import internally

[asmacdo]

Summary

Remove internal imports of deprecated nipype.LooseVersion for looseversion.LooseVersion

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (2086876) 63.34% compared to head (242b572) 63.34%.

Additional details and impacted files

@@ Coverage Diff @@ ## master #3561 +/- ## ======================================= Coverage 63.34% 63.34% ======================================= Files 309 309 Lines 40900 40904 +4 Branches 5381 5381 ======================================= + Hits 25907 25911 +4  Misses 13985 13985 Partials 1008 1008 

Impacted Files	Coverage Δ
nipype/__init__.py	53.19% <ø> (ø)
nipype/interfaces/afni/base.py	64.34% <100.00%> (+0.27%)	⬆️
nipype/interfaces/base/core.py	85.46% <100.00%> (+0.02%)	⬆️
nipype/interfaces/freesurfer/base.py	48.38% <100.00%> (ø)
nipype/interfaces/freesurfer/preprocess.py	64.42% <100.00%> (+0.03%)	⬆️
nipype/interfaces/fsl/model.py	49.11% <100.00%> (ø)
nipype/interfaces/fsl/preprocess.py	61.04% <100.00%> (ø)
nipype/interfaces/image.py	73.41% <100.00%> (ø)
nipype/interfaces/mrtrix3/base.py	59.67% <100.00%> (+0.66%)	⬆️

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