Merge #617: ci: Remove unnecesary patches

2720633 ci: Remove bitcoind patches (Andrew Chow)
e769e49 ci: Remove coldcard ffilib patch (Andrew Chow)

Pull request description:

  * Coldcard has fixed the ffilib issue upstream so our patch is no longer needed.
  * Bitcoin Core has merged Taproot PSBT fields, so our patch for it is no longer needed.
    * We did not need the PSBTv2 changes in Bitcoin Core for our tests, so these are removed as well.

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Tree-SHA512: b5c98744a88479d635ad363599fc5e524f6fd121e4dd3058ba8d522a9dccdb0b10b7a603a2711709ea079f34a07a8d12db3f6680f3eba53180610218882bbede