Merge bitcoin/bitcoin#25197: contrib: Remove keys that are no longer used for merging

d4b3dc5b0a726cc4cc7a8467be43126e78f841cf contrib: Remove keys that are no longer used for merging (Hennadii Stepanov)

Pull request description:

  See:
  - https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-21#726591
  - https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-12-09#750000

  Also updated `trusted-git-root` to be right after **meshcollider**'s last merge.

  The latest similar change was bitcoin/bitcoin#7713.

  A related discussion on [IRC](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727090):
  > [12:28](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727090) \<MarcoFalke> jonasschnelli: I was about to ask you whether you planned to remove your fingerprint from the "trusted-keys" for merging, but it looks like this will break verify-commits ...
  > [12:31](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727091) \<laanwj> you would also have a add all his merge commits to exceptions, i guess
  > [12:32](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727092) \<laanwj> or patch the script to allow different key for different ranges of commits
  > [13:15](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727118) \<jonasschnelli> MarcoFalke: I had no plan to remove my keyid,… would that make sense and how would you fix verify commits?
  > [13:16](https://bitcoin-irc.chaincode.com/bitcoin-core-dev/2021-10-22#727119) \<jonasschnelli> Ideally, we should set en expiration date next to those keyid

ACKs for top commit:
  laanwj:
    ACK d4b3dc5b0a726cc4cc7a8467be43126e78f841cf

Tree-SHA512: 6c23c932288b56b546a9ba45288205fae063e3f98ff308393acffd5d79eb5097417de1c3d8e865a3f66734740ca2388b2452c3c810e45cdf3b15ccfa215f574e

0 files changed, 0 insertions, 0 deletions