Remove deuterocanon tests

[Enkidu93]

Fixes sillsdev/machine.py#174.

I didn't see any problems in the logging from the tests, so at least at this point, I think we've resolved any issues that these would have caught. The only problems I noticed were with the tests themselves.

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This change is 

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.31%. Comparing base (0b58830) to head (3987340).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #476      +/-   ##
==========================================
- Coverage   73.33%   73.31%   -0.03%     
==========================================
  Files         445      445              
  Lines       37317    37300      -17     
  Branches     5118     5115       -3     
==========================================
- Hits        27367    27346      -21     
- Misses       8825     8827       +2     
- Partials     1125     1127       +2     

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