Remove relations of excluded tables

[k1LoW]

link #223

[codecov]

Codecov Report

Merging #226 into master will decrease coverage by 0.89%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #226      +/-   ##
==========================================
- Coverage   69.42%   68.53%   -0.90%     
==========================================
  Files          21       21              
  Lines        3572     3572              
==========================================
- Hits         2480     2448      -32     
- Misses        856      893      +37     
+ Partials      236      231       -5     

Impacted Files	Coverage Δ
config/config.go	50.15% <100.00%> (ø)
datasource/datasource.go	21.45% <0.00%> (-13.74%)	⬇️

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