Flake: remove unneeded patch

nixpkgs-patches/update-hhd.patch

@@ -1,30 +0,0 @@
-From 77380945dd829e737533359e0eba9fc965c1bdb6 Mon Sep 17 00:00:00 2001
-From: Toast <39011842+toast003@users.noreply.github.com>
-Date: Mon, 1 Jul 2024 16:41:48 +0200
-Subject: [PATCH] handheld-daemon: 2.7.2 -> 3.1.1
-
----
- pkgs/by-name/ha/handheld-daemon/package.nix | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/pkgs/by-name/ha/handheld-daemon/package.nix b/pkgs/by-name/ha/handheld-daemon/package.nix
-index ec24637dde3f70..d670fdc8b11e72 100644
---- a/pkgs/by-name/ha/handheld-daemon/package.nix
-+++ b/pkgs/by-name/ha/handheld-daemon/package.nix
-@@ -9,14 +9,14 @@
- }:
- python3.pkgs.buildPythonApplication rec {
-   pname = "handheld-daemon";
--  version = "2.7.2";
-+  version = "3.1.1";
-   pyproject = true;
- 
-   src = fetchFromGitHub {
-     owner = "hhd-dev";
-     repo = "hhd";
-     rev = "v${version}";
--    hash = "sha256-jWLL1nmKam1iJ1R1l/OuIp+isgZ7toRhVamx1nOID/8=";
-+    hash = "sha256-XUnAgQWnBb8Xsu88UVpdVXbFPxG13TNJFX1xgY06HT8=";
-   };
- 
-   propagatedBuildInputs = with python3.pkgs; [