refactor(cms-metrics): remove interface usage

[mydearxym]

No description provided.

[codecov]

Codecov Report

Merging #387 (045d2fe) into dev (5e6ac6c) will not change coverage.
The diff coverage is n/a.

❗ Current head 045d2fe differs from pull request most recent head d2f07d0. Consider uploading reports for the commit d2f07d0 to get more accurate results

@@           Coverage Diff           @@
##              dev     #387   +/-   ##
=======================================
  Coverage   87.60%   87.60%           
=======================================
  Files          63       63           
  Lines        1138     1138           
=======================================
  Hits          997      997           
  Misses        141      141           

Impacted Files	Coverage Δ
lib/groupher_server/cms/delegates/article_curd.ex	100.00% <ø> (ø)
lib/groupher_server_web/schema/cms/cms_types.ex	0.00% <ø> (ø)

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