Revert "Added deny list for checking external user submitted urls (#39947)

[ksykulev]

This reverts commit 3d4a3e1.

[codecov]

Codecov Report

❌ Patch coverage is 94.44444% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.28%. Comparing base (6110e3d) to head (815fa4f).
⚠️ Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
ee/server/service/certificate_authorities.go	93.93%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #40445      +/-   ##
==========================================
+ Coverage   66.27%   66.28%   +0.01%     
==========================================
  Files        2462     2460       -2     
  Lines      197524   197324     -200     
  Branches     8610     8701      +91     
==========================================
- Hits       130904   130803     -101     
+ Misses      54771    54682      -89     
+ Partials    11849    11839      -10     

Flag	Coverage Δ
backend	68.14% <94.44%> (-0.01%)	⬇️

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