doc: empty REVIEWERS file

It seems that it's time for our experiment with this file to come to an
end.

See discussion here:
https://github.com/bitcoin/bitcoin/pull/25560/files#r915491743.

REVIEWERS

@@ -15,126 +15,3 @@
 # review a pull request. Peer review is always welcome and is a critical
 # component of the progress of the codebase. Information on peer review
 # guidelines can be found in the CONTRIBUTING.md doc.
-
-
-# Maintainers
-#   @achow101
-#   @fanquake
-#   @hebasto
-#   @laanwj
-#   @marcofalke
-#   @sipa
-
-# Docs
-/doc/*[a-zA-Z-].md                          @harding
-/doc/Doxyfile.in                            @fanquake
-/doc/REST-interface.md                      @jonasschnelli
-/doc/benchmarking.md                        @ariard
-/doc/bitcoin-conf.md                        @hebasto
-/doc/build-freebsd.md                       @fanquake
-/doc/build-netbsd.md                        @fanquake
-/doc/build-openbsd.md                       @laanwj
-/doc/build-osx.md                           @fanquake
-/doc/build-unix.md                          @laanwj
-/doc/build-windows.md                       @sipsorcery
-/doc/dependencies.md                        @fanquake
-/doc/developer-notes.md                     @laanwj
-/doc/files.md                               @hebasto
-/doc/reduce-memory.md                       @fanquake
-/doc/reduce-traffic.md                      @jonasschnelli
-/doc/release-process.md                     @laanwj
-/doc/translation_strings_policy.md          @laanwj
-
-# Build aux
-/build-aux/m4/bitcoin_qt.m4                 @hebasto
-
-# MSVC build system
-/build_msvc/                                @sipsorcery
-
-# Settings
-/src/util/settings.*                        @ryanofsky
-
-# Fuzzing
-
-# Tests
-/src/test/net_peer_eviction_tests.cpp       @jonatack
-/test/functional/mempool_updatefromblock.py @hebasto
-/test/functional/feature_asmap.py           @jonatack
-/test/functional/interface_bitcoin_cli.py   @jonatack
-
-# Backwards compatibility tests
-*_compatibility.py                          @sjors
-/test/functional/wallet_upgradewallet.py    @sjors @achow101
-/test/get_previous_releases.py              @sjors
-
-# Translations
-/src/util/translation.h                     @hebasto
-
-# Dev Tools
-/contrib/devtools/security-check.py         @fanquake
-/contrib/devtools/test-security-check.py    @fanquake
-/contrib/devtools/symbol-check.py           @fanquake
-
-# Guix
-/contrib/guix/                              @dongcarl
-
-# Compatibility
-/src/compat/glibc_*                         @fanquake
-
-# GUI
-/src/qt/forms/                              @hebasto
-
-# Wallet
-/src/wallet/                                @achow101
-
-# CLI
-/src/bitcoin-cli.cpp                        @jonatack
-
-# Coinstats
-/src/node/coinstats.*                       @fjahr
-
-# Index
-/src/index/                                 @fjahr
-
-# Descriptors
-*descriptor*                                @achow101 @sipa
-
-# External signer
-*external_signer*                           @sjors
-/doc/external-signer.md                     @sjors
-*signer.py                                  @sjors
-
-# Interfaces
-/src/interfaces/                            @ryanofsky
-
-# DB
-/src/txdb.*                                 @jamesob
-/src/dbwrapper.*                            @jamesob
-
-# Linter
-/test/lint/lint-shell.py                    @hebasto
-
-# Bech32
-/src/bech32.*                               @sipa
-/src/bench/bech32.*                         @sipa
-
-# PSBT
-/src/psbt*                                  @achow101
-/src/node/psbt*                             @achow101
-/doc/psbt.md                                @achow101
-
-# P2P
-/src/net_processing.*                       @sipa
-/src/protocol.*                             @sipa
-
-# Consensus
-/src/coins.*                                @sipa @jamesob
-/src/script/script.*                        @sipa
-/src/script/interpreter.*                   @sipa
-/src/validation.*                           @sipa
-/src/consensus/                             @sipa
-
-# Tracing
-/doc/tracing.md                             @jb55 @0xB10C
-/src/util/trace.h                           @jb55 @0xB10C
-/contrib/tracing/                           @jb55 @0xB10C