test: remove obsolete get_{key,multisig} helpers from wallet_util.py #33782

1. 
   theStack commented at 6:06 pm on November 4, 2025: contributor

   This small cleanup PR is a late follow-up to #31250 (commit c847dee1488a294c9a9632a00ba1134b21e41947). These helpers are unused and wouldn’t work anymore, as they call a legacy wallet RPC (dumpprivkey). They were only ever used for testing the importmulti RPC, which also doesn’t exist anymore. Functional tests that need to create key pairs and derive various output script types from them can use get_generate_key (introduced in #16528, commit f193ea889ddb53d9a5c47647966681d525e38368) instead, without involving the node.
2. DrahtBot added the label Tests on Nov 4, 2025
3. 
   DrahtBot commented at 6:06 pm on November 4, 2025: contributor

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   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33782.

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4. theStack force-pushed on Nov 4, 2025
5. DrahtBot added the label CI failed on Nov 4, 2025
6. test: remove obsolete `get_{key,multisig}` helpers from wallet_util.py

   These helpers use a legacy wallet RPC (`dumpprivkey`) and thus don't
   work anymore. They were only ever used for testing the `importmulti`
   RPC, which also doesn't exist anymore.

   ec8516ceb7
7. theStack force-pushed on Nov 4, 2025
8. DrahtBot removed the label CI failed on Nov 4, 2025
9. rkrux approved
10. 
    rkrux commented at 10:01 am on November 5, 2025: contributor

    crACK ec8516ceb7568d7b09836b830023978bd37f8462
11. brunoerg approved
12. 
    brunoerg commented at 2:47 pm on November 5, 2025: contributor

    code review ACK ec8516ceb7568d7b09836b830023978bd37f8462

Contributors
theStack DrahtBot rkrux brunoerg

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Tests