chore: remove useless, old firezone terraform vars

docker/forgejo-runner/docker-compose.yml

@@ -1,6 +1,6 @@
 ---
 x-runner-common: &runner-common
-  image: code.forgejo.org/forgejo/runner:4.0.1
+  image: code.forgejo.org/forgejo/runner:5.0.3
   links:
     - docker-in-docker
   depends_on:

tofu/authentik/vars.tf

@@ -1,12 +1,3 @@
-variable "firezone_client_id" {
-  description = "Client ID"
-  type        = string
-}
-
-variable "firezone_client_secret" {
-  description = "Client secret"
-  type        = string
-}
 
 variable "gitea_client_id" {
   description = "Client ID"
@@ -52,6 +43,7 @@ variable "netbird_client_id" {
   description = "Netbird client ID"
   type        = string
 }
+
 variable "netbird_client_secret" {
   description = "Netbird client secret"
   type        = string