Removed wrapper code for deprecated routines

[ewu63]

Purpose

I removed the old wrapper functions, which were introduced in #91 over a year ago. We should make the minor release once this is merged.

Expected time until merged

Should not take more than 1-2 days.

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

None.

Checklist

• I have run flake8 and black to make sure the code adheres to PEP-8 and is consistently formatted
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation

[codecov]

Codecov Report

Merging #146 (25e73fe) into main (511e70c) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #146      +/-   ##
==========================================
+ Coverage   63.72%   63.75%   +0.03%     
==========================================
  Files          47       47              
  Lines       11679    11667      -12     
==========================================
- Hits         7442     7438       -4     
+ Misses       4237     4229       -8     

Impacted Files	Coverage Δ
pygeo/parameterization/DVGeo.py	64.64% <ø> (+0.18%)	⬆️

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[marcomangano]

LGTM