refactor: prune unused semi-colons #36268

Enable -Wextra-semi and delete all the redundant semicolons.

Waiting on a pull of the libmultiprocess subtree.

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/36268.

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Reviews

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Conflicts

Reviewers, this pull request conflicts with the following ones:

• #36244 (validation, net: Process blocks asynchronously and reduce cs_main contention by w0xlt)
• #35387 (logging: make trace logging easily usable by ryanofsky)
• #34909 (wallet, refactor: modularise wallet by extracting out legacy wallet migration by rkrux)
• #34486 (net: Reduce local network activity when networkactive=0 by willcl-ark)
• #34213 (net: preserve anchors when network is disabled by brunoerg)
• #34038 (logging: replace -loglevel with -trace, expose trace logging via RPC by ajtowns)
• #31507 (build: Use clang-cl to build on Windows natively by hebasto)
• #29700 (kernel, refactor: return error status on all fatal errors by ryanofsky)
• #27865 (wallet: Track no-longer-spendable TXOs separately by achow101)
• #27052 (test: rpc: add last block announcement time to getpeerinfo result by LarryRuane)
• #26022 (Add util::ResultPtr class by ryanofsky)
• #25665 (refactor: Add util::Result failure types and ability to merge result values by ryanofsky)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

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🚧 At least one of the CI tasks failed. _{Task lint: https://github.com/bitcoin/bitcoin/actions/runs/35082380885/job/104749176904} _{LLM reason (✨ experimental): CI failed the lint “subtree” check because a subtree directory was modified without a corresponding subtree merge.}

<details><summary>Hints</summary>

Try to run the tests locally, according to the documentation. However, a CI failure may still happen due to a number of reasons, for example:

• Possibly due to a silent merge conflict (the changes in this pull request being incompatible with the current code in the target branch). If so, make sure to rebase on the latest commit of the target branch.

• A sanitizer issue, which can only be found by compiling with the sanitizer and running the affected test.

• An intermittent issue.

Leave a comment here, if you need help tracking down a confusing failure.

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🐙 This pull request conflicts with the target branch and needs rebase.