[RTR] deleted the lines that should have been deleted

[EveCharbie]

This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.95%. Comparing base (f3b330a) to head (ee2ea15).
Report is 34 commits behind head on master.

Files with missing lines	Patch %	Lines
...examples/torque_driven_ocp/example_soft_contact.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #935      +/-   ##
==========================================
+ Coverage   77.79%   77.95%   +0.16%     
==========================================
  Files         157      157              
  Lines       18071    18135      +64     
==========================================
+ Hits        14059    14138      +79     
+ Misses       4012     3997      -15     

Flag	Coverage Δ
unittests	77.95% <80.00%> (+0.16%)	⬆️

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[EveCharbie]

@pariterre could you please review this carefully and make sure that what I did is in line with what you ment by that comment ?
@Ipuch I think you would be interested to see what I did with the soft contact function.