Revert "Flake: add nixpkgs patch to fix rtkit"

This reverts commit 13c1d5864d.

flake.nix

@@ -101,7 +101,6 @@
           name = "patched-nixpkgs-unstable";
           src = nixpkgs-unstable-raw;
           patches = [
-            ./nixpkgs-patches/pr455128.patch
           ];
         };
         nixpkgs-patched = nixpkgs-raw.legacyPackages.x86_64-linux.applyPatches {

nixpkgs-patches/pr455128.patch

@@ -1,22 +0,0 @@
-From 2e9d838795edcec2b79dda0284acf27ee34b1ecc Mon Sep 17 00:00:00 2001
-From: h7x4 <h7x4@nani.wtf>
-Date: Fri, 24 Oct 2025 14:24:14 +0900
-Subject: [PATCH] nixos/rtkit: fix hardening
-
----
- nixos/modules/security/rtkit.nix | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/nixos/modules/security/rtkit.nix b/nixos/modules/security/rtkit.nix
-index d7c6df17f03b9..f2cd256468da9 100644
---- a/nixos/modules/security/rtkit.nix
-+++ b/nixos/modules/security/rtkit.nix
-@@ -64,7 +64,7 @@ in
-         ];
- 
-         # Needs to verify the user of the processes.
--        PrivateUsers = "full";
-+        PrivateUsers = false;
-         # Needs to access other processes to modify their scheduling modes.
-         ProcSubset = "all";
-         ProtectProc = "default";