feat: remove duplicates

[NilsOveTen]

resolve #183

[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 4 lines in your changes missing coverage. Please review.

Project coverage is 78.09%. Comparing base (8f67ed0) to head (8a6758c).
Report is 1 commits behind head on main.

Files	Patch %	Lines
...ataservice_harvester/service/DataServiceService.kt	85.71%	0 Missing and 4 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #186      +/-   ##
============================================
+ Coverage     77.51%   78.09%   +0.58%     
- Complexity      126      138      +12     
============================================
  Files            23       24       +1     
  Lines           667      703      +36     
  Branches        108      118      +10     
============================================
+ Hits            517      549      +32     
  Misses           79       79              
- Partials         71       75       +4     

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