5b44a75493a1a098404d5e21dc384e74eae1892e refactor: Remove unused CExt{Pub,}Key (de)serialization methods (Sebastian Falbesoner)
Pull request description:
As pointed out in issue #17130, the serialization/deserialization methods for the classes `CExtKey` and
`CExtPubKey` are only used in the BIP32 unit tests and hence can be removed (see comments https://github.com/bitcoin/bitcoin/issues/17130#issuecomment-543750290, https://github.com/bitcoin/bitcoin/issues/17130#issuecomment-543794408 and https://github.com/bitcoin/bitcoin/issues/17130#issuecomment-543814727).
ACKs for top commit:
practicalswift:
ACK 5b44a75493a1a098404d5e21dc384e74eae1892e -- -60 LOC diff looks correct :)
promag:
ACK 5b44a75493a1a098404d5e21dc384e74eae1892e.
MarcoFalke:
unsigned ACK 5b44a75493a1a098404d5e21dc384e74eae1892e
fjahr:
ACK 5b44a75
jonatack:
Light ACK 5b44a75493a1a098404d5e21dc384e74eae1892e. Built, ran tests and bitcoind. `git blame` shows most of the last changes are from commit 90604f16af63ec066d6561337f476ccd8acec326 in 2015 to add bip32 pubkey serialization.
Tree-SHA512: 6887573b76b9e54e117a076557407b6f7908719b2202fb9eea498522baf9f30198b3f78b87a62efcd17ad1ab0886196f099239992ce7cbbaee79979ffe9e5f2c