clean up unused variables

variables.tf

@@ -79,16 +79,6 @@ variable "worker_sg_ingress_from_port" {
   default     = "1025"
 }
 
-variable "kubeconfig_context_name" {
-  description = "Name of the kubeconfig context."
-  default     = "aws"
-}
-
-variable "kubeconfig_user_name" {
-  description = "Name of the kubeconfig user."
-  default     = "aws"
-}
-
 variable "kubeconfig_aws_authenticator_command" {
   description = "Command to use to to fetch AWS EKS credentials"
   default     = "heptio-authenticator-aws"