chore: revert function spacing

It turns out that no extra line is used when the function definition
isn't at the beginning of the file.

example/flake.nix

@@ -7,7 +7,6 @@
 
   outputs =
     { nix-config, ... }@attrs:
-
     let
       inherit (nix-config.inputs) nixpkgs;
       inherit (nixpkgs.lib) nixosSystem optional;

flake.nix

@@ -24,14 +24,12 @@
 
   outputs =
     { self, nixpkgs, ... }:
-
     let
       inherit (nixpkgs.lib) nixosSystem genAttrs replaceStrings;
       inherit (nixpkgs.lib.filesystem) packagesFromDirectoryRecursive listFilesRecursive;
 
       forAllSystems =
         function:
-
         genAttrs [
           "x86_64-linux"
           "aarch64-linux"
@@ -42,7 +40,6 @@
     {
       packages = forAllSystems (
         pkgs:
-
         packagesFromDirectoryRecursive {
           inherit (pkgs) callPackage;
 
@@ -62,10 +59,8 @@
 
       checks = forAllSystems (
         pkgs:
-
         genAttrs (map nameOf (listFilesRecursive ./tests)) (
           name:
-
           import ./tests/${name}.nix {
             inherit self pkgs;
           }

modules/containers.nix

@@ -58,7 +58,6 @@ in
     wine = template // {
       config =
         { nix-config, pkgs, ... }:
-
         {
           imports =
             with nix-config.nixosModules;

tests/neovim.nix

@@ -7,7 +7,6 @@ self.inputs.nixpkgs.lib.nixos.runTest {
 
   nodes.machine =
     { nix-config, config, ... }:
-
     {
       imports = with nix-config.nixosModules; [
         shell