systemd: remove patch

flake.nix

@@ -335,12 +335,6 @@
                   prev.callPackage "${patchedStableSrc}/pkgs/by-name/sy/syncstorage-rs/package.nix"
                     { };
               })
-              # NOTE: systemd patch is applied via `systemd.package` in the module
-              # list below, not via an overlay. An overlay replaces pkgs.systemd
-              # for every consumer, which cascades through udev-check-hook and
-              # causes the entire closure (fish, e2fsprogs, valkey, …) to rebuild
-              # and re-run flaky test suites in the sandbox. `systemd.package`
-              # only injects the patched systemd into the runtime init chain.
             ];
             nixpkgs.config.allowUnfreePredicate =
               pkg:
@@ -349,26 +343,6 @@
               ];
           }
 
-          # Runtime-only systemd patch: reset FreezerState on inactive/failed
-          # transitions so a SIGKILL to a frozen unit doesn't strand
-          # FreezerState=frozen (unrecoverable without a reboot, upstream issue
-          # #38517). PR #38528 closed only the watchdog path; this closes
-          # systemctl kill / OOM / segfault paths too.
-          #
-          # Applied via systemd.package, not via overlay, so pkgs.systemd stays
-          # untouched for every other consumer — no udev-check-hook cascade,
-          # no fish/e2fsprogs/valkey rebuild, no flaky-test fallout.
-          (
-            { pkgs, ... }:
-            {
-              systemd.package = pkgs.systemd.overrideAttrs (old: {
-                patches = (old.patches or [ ]) ++ [
-                  ./patches/systemd/0001-core-unit-reset-freezer-state-on-inactive-failed.patch
-                ];
-              });
-            }
-          )
-
           lanzaboote.nixosModules.lanzaboote
           arr-init.nixosModules.default
           (import "${nixpkgs-p2pool-module}/nixos/modules/services/networking/p2pool.nix")