chore: remove legacy tests

[wellwelwel]

Finally, the last chapter of #3695 test section ✨

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.97%. Comparing base (2b0325b) to head (863685e).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4102   +/-   ##
=======================================
  Coverage   89.97%   89.97%           
=======================================
  Files          86       86           
  Lines       13692    13692           
  Branches     1642     1642           
=======================================
  Hits        12320    12320           
  Misses       1372     1372           

Flag	Coverage Δ
compression-0	89.20% <ø> (ø)
compression-1	89.95% <ø> (ø)
static-parser-0	87.56% <ø> (ø)
static-parser-1	88.32% <ø> (ø)
tls-0	89.38% <ø> (ø)
tls-1	89.75% <ø> (ø)

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