Remove deprecated code

[RomarQ]

Removes code deprecated in #3397

[coderabbitai]

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch rq/remove-deprecated

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[github-actions]

WASM runtime size check:

Compared to target branch

Moonbase runtime: 1980 KB (-4 KB) ✅

Moonbeam runtime: 2108 KB (no changes) ✅

Moonriver runtime: 2108 KB (no changes) ✅

Compared to latest release (runtime-4000)

Moonbase runtime: 1980 KB (+208 KB compared to latest release) ⚠️

Moonbeam runtime: 2108 KB (+244 KB compared to latest release) ⚠️

Moonriver runtime: 2108 KB (+244 KB compared to latest release) ⚠️

[github-actions]

Coverage Report

@@                   Coverage Diff                   @@
##           master   rq/remove-deprecated     +/-   ##
=======================================================
  Coverage   74.71%                 74.71%   0.00%     
  Files         397                    397             
- Lines       96484                  96479      -5     
=======================================================
  Hits        72081                  72081             
- Misses      24403                  24398      -5     

Files Changed	Coverage
/node/service/src/lib.rs	55.76% (+0.27%)	🔼

Coverage generated Mon Nov 3 20:39:56 UTC 2025

[manuelmauro]

lgtm