refactor: Drop unused cast #1382

1. 
   hebasto commented at 1:12 pm on July 24, 2023: member

   The resulted code treats memcpy’s arguments exactly the same way as it does a few lines above: https://github.com/bitcoin-core/secp256k1/blob/c545fdc374964424683d9dac31a828adedabe860/src/hash_impl.h#L133
2. refactor: Drop unused cast 4f8c5bd761
3. real-or-random approved
4. 
   real-or-random commented at 1:17 pm on July 24, 2023: contributor

   utACK 4f8c5bd76132a0d0242c7a29b666153f927800bb
5. real-or-random added the label refactor/smell on Jul 24, 2023
6. jonasnick approved
7. 
   jonasnick commented at 6:59 pm on July 24, 2023: contributor

   ACK 4f8c5bd76132a0d0242c7a29b666153f927800bb
8. jonasnick merged this on Jul 24, 2023
9. jonasnick closed this on Jul 24, 2023

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10. hebasto deleted the branch on Jul 24, 2023
11. jonasnick cross-referenced this on Jul 27, 2023 from issue Upstream PRs 1357, 1345, 1358, 1368, 1369, 1323, 1364, 1370, 1367, 1344, 1371, 1363, 1340, 1366, 1313, 1378, 1298, 1382, 1383, 1384, 1386 by jonasnick

Contributors
hebasto real-or-random jonasnick

Labels
refactor/smell