docs: Remove conda special instructions for brotli

[Pijukatel]

It is now included by default: https://github.com/conda-forge/apify-client-feedstock/pull/4/changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.64%. Comparing base (2adf515) to head (6b8373f).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #959   +/-   ##
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  Coverage   94.64%   94.64%           
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  Files          58       58           
  Lines        5263     5263           
=======================================
  Hits         4981     4981           
  Misses        282      282           

Flag	Coverage Δ
integration	92.49% <ø> (+0.18%)	⬆️
unit	83.94% <ø> (ø)

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[vdusek]

Well, conda doesn't support brotli, that's true, right? So maybe we should just update this note to reflect the current state (brotli is part of the core package if I am not mistaken).

[Pijukatel]

I think that it is an unnecessary detail. In conda-forge everything is commonly included (in other packages as well), it is common practice since extras are not supported yet. So I think that conda-forge users are expecting this by default.

[vdusek]

OK