Merge bitcoindevkit/bdk#1884: doc: remove persist crate from README

7b8faa3 doc: remove persist crate from README (Luis Schwab)

Pull request description:

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  ### Description

  - Removed `persist` crate from `README.md`

  ### Checklists

  #### All Submissions:

  * [X] I've signed all my commits
  * [X] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [X] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  LagginTimes:
    ACK 7b8faa3
  ValuedMammal:
    ACK 7b8faa3

Tree-SHA512: d15ab9a5b7002e71790324d02c1650bc15a8e6c28c16d0cbe04cfd0d610f93a322abd00f5aaf25416d0055c3008c46079f5effefeb66ff6dd5e6e770bbf3735b

Author: ValuedMammal

README.md

@@ -37,7 +37,6 @@ The project is split up into several crates in the `/crates` directory:
 
 - [`wallet`](./crates/wallet): Contains the central high level `Wallet` type that is built from the low-level mechanisms provided by the other components
 - [`chain`](./crates/chain): Tools for storing and indexing chain data
-- [`persist`](./crates/persist): Types that define data persistence of a BDK wallet
 - [`file_store`](./crates/file_store): Persistence backend for storing chain data in a single file. Intended for testing and development purposes, not for production.
 - [`esplora`](./crates/esplora): Extends the [`esplora-client`] crate with methods to fetch chain data from an esplora HTTP server in the form that [`bdk_chain`] and `Wallet` can consume.
 - [`electrum`](./crates/electrum): Extends the [`electrum-client`] crate with methods to fetch chain data from an electrum server in the form that [`bdk_chain`] and `Wallet` can consume.