test: fix ecocredit test and disable orm test

[ryanchristo]

Description

Closes: #1068

This pull request fixes TestSellOrders and disables TestPrimaryKeyTable, both of which were causing intermittent errors, and the second being part of the orm module, which is no longer maintained and will soon be deleted.

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Author Checklist

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• included the necessary unit and integration tests
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• confirmed the correct type prefix in the PR title
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• reviewed state machine logic
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[codecov]

Codecov Report

Merging #1070 (80e26e4) into master (7d75fe3) will increase coverage by 5.65%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1070      +/-   ##
==========================================
+ Coverage   62.93%   68.58%   +5.65%     
==========================================
  Files         220      224       +4     
  Lines       19526    21670    +2144     
==========================================
+ Hits        12288    14863    +2575     
+ Misses       5983     5474     -509     
- Partials     1255     1333      +78     

Flag	Coverage Δ
experimental-codecov	68.46% <ø> (?)
stable-codecov	62.61% <ø> (-0.33%)	⬇️

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[technicallyty]

lgtm