openconnect_unstable: remove

Removed because it was not being updated, and has been superseded by multiple stable releases.

pkgs/tools/networking/openconnect/default.nix

···
     };
   };
 
-  openconnect_unstable = common {
-    version = "unstable-2022-03-14";
-    src = fetchFromGitLab {
-      owner = "openconnect";
-      repo = "openconnect";
-      rev = "a27a46f1362978db9723c8730f2533516b4b31b1";
-      sha256 = "sha256-Kz98GHCyEcx7vUF+AXMLR7886+iKGKNwx1iRaYcH8ps=";
-    };
-  };
-
   openconnect_openssl = openconnect.override {
     useOpenSSL = true;
   };

pkgs/top-level/aliases.nix

···
   openconnect_head = openconnect_unstable; # Added 2022-03-29
   openconnect_gnutls = openconnect; # Added 2022-03-29
   openconnect_pa = throw "openconnect_pa fork has been discontinued, support for GlobalProtect is now available in openconnect"; # Added 2021-05-21
+  openconnect_unstable = throw "openconnect_unstable was removed from nixpkgs as it was not being updated"; # Added 2023-06-01
   openelec-dvb-firmware = libreelec-dvb-firmware; # Added 2021-05-10
   openexr_ctl = throw "'openexr_ctl' has been renamed to/replaced by 'ctl'"; # Converted to throw 2022-02-22
   openimageio2 = openimageio; # Added 2023-01-05

pkgs/top-level/all-packages.nix

···
 
   openconnectPackages = callPackage ../tools/networking/openconnect { };
 
-  inherit (openconnectPackages) openconnect openconnect_unstable openconnect_openssl;
+  inherit (openconnectPackages) openconnect openconnect_openssl;
 
   globalprotect-openconnect = libsForQt5.callPackage ../tools/networking/globalprotect-openconnect { };