libressl_4_1: delete unsupported package

LibreSSL branches are supported for one year after the OpenBSD release
in which they are included. LibreSSL 4.1 was part of OpenBSD 7.7, which
was released on April 28, 2025, so it's end of life now.

pkgs/by-name/li/libressl/default.nix

@@ -120,27 +120,6 @@ let
   };
 in
 {
-  # 4.1 was released April 2025 and became unsupported on April 28, 2026,
-  # one year after the release of OpenBSD 7.7.
-  libressl_4_1 = generic {
-    version = "4.1.2";
-    hash = "sha256-+6Ti+ip/UjBt96OJlwoQ6YuX6w7bKZqf252/SZmcYeE=";
-    # Fixes build on loongarch64
-    # https://github.com/libressl/portable/pull/1184
-    postPatch = ''
-      mkdir -p include/arch/loongarch64
-      cp ${
-        fetchurl {
-          url = "https://github.com/libressl/portable/raw/refs/tags/v4.1.0/include/arch/loongarch64/opensslconf.h";
-          hash = "sha256-68dw5syUy1z6GadCMR4TR9+0UQX6Lw/CbPWvjHGAhgo=";
-        }
-      } include/arch/loongarch64/opensslconf.h
-    '';
-    patches = [
-      common-cmake-install-full-dirs-patch
-    ];
-  };
-
   # 4.2 was released October 2025 and will become unsupported on October 22,
   # 2026, one year after the release of OpenBSD 7.8.
   libressl_4_2 = generic {

pkgs/top-level/all-packages.nix

@@ -7001,7 +7001,6 @@ with pkgs;
   zunclient = with python313Packages; toPythonApplication python-zunclient;
 
   inherit (callPackages ../by-name/li/libressl { })
-    libressl_4_1
     libressl_4_2
     libressl_4_3
     ;