treewide: Remove nixfmt-rfc-style from update script shebangs

Based on the Nixpkgs used and the version of nixfmt-rfc-style in that
version, it's likely that not the correct version is used.

Update scripts should instead run within a Nixpkgs development shell
(`nix-shell`/`nix develop`/`direnv`), where the correct version of
`nixfmt` (although `treefmt` should be preferred) is always available.

maintainers/scripts/haskell/regenerate-hackage-packages.sh

···
 #! /usr/bin/env nix-shell
-#! nix-shell -i bash -p coreutils haskellPackages.cabal2nix-unstable git nixfmt-rfc-style -I nixpkgs=.
+#! nix-shell -i bash -p coreutils haskellPackages.cabal2nix-unstable git -I nixpkgs=.
 
 set -euo pipefail
 

maintainers/scripts/haskell/update-cabal2nix-unstable.sh

···
 #! /usr/bin/env nix-shell
-#! nix-shell -i bash -p coreutils curl jq gnused haskellPackages.cabal2nix-unstable nixfmt-rfc-style -I nixpkgs=.
+#! nix-shell -i bash -p coreutils curl jq gnused haskellPackages.cabal2nix-unstable -I nixpkgs=.
 
 # Updates cabal2nix-unstable to the latest master of the nixos/cabal2nix repository.
 # See regenerate-hackage-packages.sh for details on the purpose of this script.

pkgs/by-name/br/bruijn/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p coreutils cabal2nix curl jq nixfmt-rfc-style
+#!nix-shell -i bash -p coreutils cabal2nix curl jq
 
 set -euo pipefail
 

pkgs/by-name/cr/creek/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash common-updater-scripts gnused nixfmt-rfc-style
+#!nix-shell -i bash -p bash common-updater-scripts gnused
 
 latest_tag=$(list-git-tags --url=https://github.com/nmeum/creek | sed 's/^v//' | tail -n 1)
 

pkgs/by-name/dp/dprint/plugins/update-plugins.py

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i python -p nix nixfmt-rfc-style 'python3.withPackages (pp: [ pp.requests ])'
+#!nix-shell -i python -p nix 'python3.withPackages (pp: [ pp.requests ])'
 
 import json
 import os

pkgs/by-name/ej/ejabberd/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -I nixpkgs=./. -i bash -p curl jq common-updater-scripts "rebar3WithPlugins {globalPlugins = [beamPackages.rebar3-nix];}" erlang autoconf automake nixfmt-rfc-style
+#!nix-shell -I nixpkgs=./. -i bash -p curl jq common-updater-scripts "rebar3WithPlugins {globalPlugins = [beamPackages.rebar3-nix];}" erlang autoconf automake
 #shellcheck shell=bash
 
 set -eu -o pipefail

pkgs/by-name/fl/flow-control/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash common-updater-scripts gnused nixfmt-rfc-style
+#!nix-shell -i bash -p bash common-updater-scripts gnused
 
 latest_tag=$(list-git-tags --url=https://github.com/neurocyte/flow | sed 's/^v//' | tail -n 1)
 

pkgs/by-name/gr/gren/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p cabal2nix curl jq nixfmt-rfc-style
+#!nix-shell -i bash -p cabal2nix curl jq
 
 set -euo pipefail
 

pkgs/by-name/ms/msgraph-cli/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p curl gnused nixfmt-rfc-style common-updater-scripts
+#!nix-shell -i bash -p curl gnused common-updater-scripts
 set -eEuo pipefail
 [ -z "${DEBUG:-}" ] || set -x
 cd "${BASH_SOURCE[0]%/*}"

pkgs/by-name/mu/music-assistant/update-providers.py

···
 #!/usr/bin/env nix-shell
-#!nix-shell -I nixpkgs=./. -i python3 -p "music-assistant.python.withPackages (ps: music-assistant.dependencies ++ (with ps; [ jinja2 packaging ]))" -p pyright ruff isort nixfmt-rfc-style
+#!nix-shell -I nixpkgs=./. -i python3 -p "music-assistant.python.withPackages (ps: music-assistant.dependencies ++ (with ps; [ jinja2 packaging ]))" -p pyright ruff isort
 import asyncio
 import json
 import os.path

pkgs/by-name/oa/oama/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p haskell.packages.ghc910.cabal2nix nix-prefetch-git curl jq nixfmt-rfc-style
+#!nix-shell -i bash -p haskell.packages.ghc910.cabal2nix nix-prefetch-git curl jq
 
 set -euo pipefail
 

pkgs/by-name/ri/river-bedload/update-build-zig-zon.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash jq nixfmt-rfc-style zon2nix
+#!nix-shell -i bash -p bash jq zon2nix
 
 commit=$(nix-instantiate --eval -A river-bedload.src.rev | jq --raw-output)
 

pkgs/by-name/ri/river/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash common-updater-scripts gnused nixfmt-rfc-style zon2nix
+#!nix-shell -i bash -p bash common-updater-scripts gnused zon2nix
 
 latest_tag=$(list-git-tags --url=https://codeberg.org/river/river | sed 's/^v//' | sort --version-sort | tail --lines=1)
 

pkgs/by-name/wa/waylock/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p bash common-updater-scripts gnused nixfmt-rfc-style zon2nix
+#!nix-shell -i bash -p bash common-updater-scripts gnused zon2nix
 
 latest_tag=$(list-git-tags --url=https://codeberg.org/ifreund/waylock | sed 's/^v//' | tail -n 1)
 

pkgs/development/beam-modules/elvis-erlang/default.nix

···
 
   passthru.updateScript = writeScript "update.sh" ''
     #!/usr/bin/env nix-shell
-    #!nix-shell -i bash -p bash common-updater-scripts git nix-prefetch-git gnutar gzip "rebar3WithPlugins {globalPlugins = [beamPackages.rebar3-nix];}" nixfmt-rfc-style
+    #!nix-shell -i bash -p bash common-updater-scripts git nix-prefetch-git gnutar gzip "rebar3WithPlugins {globalPlugins = [beamPackages.rebar3-nix];}"
 
     set -euo pipefail
 

pkgs/development/beam-modules/erlang-ls/default.nix

···
 
   passthru.updateScript = writeScript "update.sh" ''
     #!/usr/bin/env nix-shell
-    #! nix-shell -i bash -p common-updater-scripts coreutils git gnused gnutar gzip nixfmt-rfc-style "rebar3WithPlugins { globalPlugins = [ beamPackages.rebar3-nix ]; }"
+    #! nix-shell -i bash -p common-updater-scripts coreutils git gnused gnutar gzip "rebar3WithPlugins { globalPlugins = [ beamPackages.rebar3-nix ]; }"
 
     set -ox errexit
     latest=$(list-git-tags | sed -n '/[\d\.]\+/p' | sort -V | tail -1)

pkgs/development/compilers/dotnet/update.sh

···
 #!/usr/bin/env nix-shell
-#!nix-shell -I nixpkgs=./. -i bash -p curl jq nix gnused nixfmt-rfc-style
+#!nix-shell -I nixpkgs=./. -i bash -p curl jq nix gnused
 # shellcheck shell=bash
 
 set -Eeuo pipefail

pkgs/servers/home-assistant/update-component-packages.py

···
 #! /usr/bin/env nix-shell
-#! nix-shell -i python3 -p "python3.withPackages (ps: with ps; [ packaging rich ])" -p pyright ruff isort nixfmt-rfc-style
+#! nix-shell -i python3 -p "python3.withPackages (ps: with ps; [ packaging rich ])" -p pyright ruff isort
 #
 # This script downloads Home Assistant's source tarball.
 # Inside the homeassistant/components directory, each integration has an associated manifest.json,