Fix: Remove abstract test case

[localheinz]

This PR

• removes an abstract test case

[codecov]

Codecov Report

Merging #107 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #107   +/-   ##
=========================================
  Coverage     98.55%   98.55%           
  Complexity       48       48           
=========================================
  Files             6        6           
  Lines           138      138           
=========================================
  Hits            136      136           
  Misses            2        2

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