chore: remove redundant comment from DA (#192)

Author: Aditya-ranjan-16

solutions/fully-configurable/variables.tf

@@ -59,8 +59,7 @@ variable "prefix" {
 variable "provider_visibility" {
   description = "Set the visibility value for the IBM terraform provider. Supported values are `public`, `private`, `public-and-private`. [Learn more](https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/guides/custom-service-endpoints)."
   type        = string
-  # Defaulting this to public to workaround https://github.com/IBM-Cloud/terraform-provider-ibm/issues/5977
-  default = "private"
+  default     = "private"
 
   validation {
     condition     = contains(["public", "private", "public-and-private"], var.provider_visibility)