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doc: do not list descriptor RPCs or history

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doc/descriptors.md
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# Support for Output Descriptors in Bitcoin Core
Since Bitcoin Core v0.17, there is support for Output Descriptors. This is a
simple language which can be used to describe collections of output scripts.
Supporting RPCs are:
- `scantxoutset` takes as input descriptors to scan for, and also reports
specialized descriptors for the matching UTXOs.
- `getdescriptorinfo` analyzes a descriptor, and reports a canonicalized version
with checksum added.
- `deriveaddresses` takes as input a descriptor and computes the corresponding
addresses.
- `listunspent` outputs a specialized descriptor for the reported unspent outputs.
- `getaddressinfo` outputs a descriptor for solvable addresses (since v0.18).
- `generatetodescriptor` takes as input a descriptor and generates coins to it
(`regtest` only, since v0.19).
- `utxoupdatepsbt` takes as input descriptors to add information to the psbt
(since v0.19).
- `createmultisig` and `addmultisigaddress` return descriptors as well (since v0.20).
- `importdescriptors` takes as input descriptors to import into a descriptor wallet
(since v0.21).
- `listdescriptors` outputs descriptors imported into a descriptor wallet (since v22).
- `scanblocks` takes as input descriptors to scan for in blocks and returns the
relevant blockhashes (since v25).
- `getdescriptoractivity` takes as input descriptors and blockhashes (as output
by `scanblocks`) and returns rich event data related to spends or receives associated
with the given descriptors.
Bitcoin Core v24 extended `wsh()` output descriptor with [Miniscript](https://bitcoin.sipa.be/miniscript/) support (initially watch-only). Signing support for Miniscript descriptors was added in v25. And since v26 Miniscript expressions can now be used in Taproot descriptors.
Many Bitcoin Core RPCs support Output Descriptors. This is a simple language
which can be used to describe collections of output scripts. The wallet code
internally stores and operates on these descriptors to reason about the sets
of outputs that belong to the wallet.
This document describes the language. For the specifics on usage, see the RPC
documentation for the functions mentioned above.
documentation.
## Features