fix: remove COPY config ./config from Dockerfile

[Strum355]

Description

That file was removed in #661, but is no longer needed since #280 removed TRUSTIFY_DA_DEV_MODE anyways

Checklist

• I have followed this repository's contributing guidelines.
• I will adhere to the project's code of conduct.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.95%. Comparing base (a91270b) to head (3ba71fe).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #665   +/-   ##
=======================================
  Coverage   91.95%   91.95%           
=======================================
  Files          45       45           
  Lines       11014    11014           
  Branches     2002     2002           
=======================================
  Hits        10128    10128           
  Misses        886      886           

Flag	Coverage Δ
unit-tests	91.95% <ø> (ø)

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