Remove openvpn from packages

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/12363fb6d89859a37cd7e27f85288599f13e49d9' (2022-08-03)
  → 'github:NixOS/nixpkgs/93c57a988470c1948976b1bb70abbd5855c5b810' (2022-08-05)

flake.lock

@@ -38,11 +38,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1659487974,
+        "lastModified": 1659713809,
-        "narHash": "sha256-CVGOtR/Wyq3TVCjf8/kdnYD5G2JwUKUQVtd+5WIDTuY=",
+        "narHash": "sha256-M4aHuXXVnfprM8xPH2lLkYkkR0fmaG5QmvIc0DT/d4E=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "12363fb6d89859a37cd7e27f85288599f13e49d9",
+        "rev": "93c57a988470c1948976b1bb70abbd5855c5b810",
         "type": "github"
       },
       "original": {

modules/software.nix

@@ -88,7 +88,6 @@ in {
     # Overlays
     cachix
     # Networking
-    openvpn
     openconnect-sso
     # Programming tools
     ## Shell