fix(response-headers-policy): no define remove_headers_config block if var.remove_headers is empty

Author: posquit0

modules/response-headers-policy/README.md

@@ -16,7 +16,7 @@ This module creates following resources.
 
 | Name | Version |
 |------|---------|
-| <a name="provider_aws"></a> [aws](#provider\_aws) | 6.0.0 |
+| <a name="provider_aws"></a> [aws](#provider\_aws) | 6.10.0 |
 
 ## Modules
 

modules/response-headers-policy/main.tf

@@ -61,12 +61,16 @@ resource "aws_cloudfront_response_headers_policy" "this" {
     }
   }
 
-  remove_headers_config {
-    dynamic "items" {
-      for_each = var.remove_headers
+  dynamic "remove_headers_config" {
+    for_each = length(var.remove_headers) > 0 ? ["go"] : []
 
-      content {
-        header = items.value
+    content {
+      dynamic "items" {
+        for_each = var.remove_headers
+
+        content {
+          header = items.value
+        }
       }
     }
   }