test: remove unused create_confirmed_utxos helper #25374

1. 
   theStack commented at 11:15 pm on June 14, 2022: member

   After more and more non-wallet tests have been converted to use MiniWallet (#25087, #24839, #24749 etc.), the create_confirmed_utxos helper is now not used anymore and can be removed. An alternative would be to create a MiniWallet version of create_confirmed_utxos, but it seems that it’s not worth it, considering that would be only two lines (calling MiniWallet’s send_self_transfer_multi with a subsequent generate call), see comment #24839 (review).
2. test: remove unused `create_confirmed_utxos` helper

   Confirmed UTXOs in functional tests can simply be created by using
   MiniWallet's `send_self_transfer_multi` method with a subsequent
   `generate` call to mine a block.

   42b2fdfd5f
3. DrahtBot added the label Tests on Jun 14, 2022
4. 
   MarcoFalke commented at 6:20 am on June 15, 2022: member

   cr ACK 42b2fdfd5f9d854fe05a248278fc309a6a9fa6bc
5. MarcoFalke merged this on Jun 15, 2022
6. MarcoFalke closed this on Jun 15, 2022

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7. theStack deleted the branch on Jun 15, 2022
8. sidhujag referenced this in commit 1630aae6a4 on Jun 15, 2022
9. DrahtBot locked this on Jun 15, 2023

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