docs: remove changelog

[crazy-max]

Like we said on Slack changelog is not useful as release notes are already available in GitHub Releases.

[codecov]

Codecov Report

Merging #285 (776532b) into master (d401a53) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #285   +/-   ##
=======================================
  Coverage   86.40%   86.40%           
=======================================
  Files           5        5           
  Lines         103      103           
  Branches       18       18           
=======================================
  Hits           89       89           
  Misses          6        6           
  Partials        8        8           

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