Remove AWS access and secret keys from example

Author: briskt

example/providers.tf

@@ -1,14 +1,10 @@
 
 provider "aws" {
   region     = var.aws_region
-  access_key = var.aws_access_key_id
-  secret_key = var.aws_secret_access_key
 }
 
 provider "aws" {
   region     = var.aws_region_secondary
-  access_key = var.aws_access_key_id
-  secret_key = var.aws_secret_access_key
 
   alias = "secondary"
 }