Update docs

website/docs/d/iam_policy_document.html.markdown

@@ -486,14 +486,11 @@ data "aws_iam_policy_document" "combined" {
 
 The following arguments are optional:
 
-* `override_json` (Optional, **Deprecated** use the `override_policy_documents` attribute instead) - IAM policy document whose statements with non-blank `sid`s will override statements with the same `sid` from documents assigned to the `source_json`, `source_policy_documents`, and `override_policy_documents` arguments. Non-overriding statements will be added to the exported document.
+~> **NOTE:** Statements without a `sid` cannot be overridden. In other words, a statement without a `sid` from `source_policy_documents` cannot be overridden by statements from `override_policy_documents`.
 
-~> **NOTE:** Statements without a `sid` cannot be overridden. In other words, a statement without a `sid` from documents assigned to the `source_json` or `source_policy_documents` arguments cannot be overridden by statements from documents assigned to the `override_json` or `override_policy_documents` arguments.
-
-* `override_policy_documents` (Optional) - List of IAM policy documents that are merged together into the exported document. In merging, statements with non-blank `sid`s will override statements with the same `sid` from earlier documents in the list. Statements with non-blank `sid`s will also override statements with the same `sid` from documents provided in the `source_json` and `source_policy_documents` arguments.  Non-overriding statements will be added to the exported document.
+* `override_policy_documents` (Optional) - List of IAM policy documents that are merged together into the exported document. In merging, statements with non-blank `sid`s will override statements with the same `sid` from earlier documents in the list. Statements with non-blank `sid`s will also override statements with the same `sid` from `source_policy_documents`.  Non-overriding statements will be added to the exported document.
 * `policy_id` (Optional) - ID for the policy document.
-* `source_json` (Optional, **Deprecated** use the `source_policy_documents` attribute instead) - IAM policy document used as a base for the exported policy document. Statements with the same `sid` from documents assigned to the `override_json` and `override_policy_documents` arguments will override source statements.
-* `source_policy_documents` (Optional) - List of IAM policy documents that are merged together into the exported document. Statements defined in `source_policy_documents` or `source_json` must have unique `sid`s. Statements with the same `sid` from documents assigned to the `override_json` and `override_policy_documents` arguments will override source statements.
+* `source_policy_documents` (Optional) - List of IAM policy documents that are merged together into the exported document. Statements defined in `source_policy_documents` must have unique `sid`s. Statements with the same `sid` from `override_policy_documents` will override source statements.
 * `statement` (Optional) - Configuration block for a policy statement. Detailed below.
 * `version` (Optional) - IAM policy document version. Valid values are `2008-10-17` and `2012-10-17`. Defaults to `2012-10-17`. For more information, see the [AWS IAM User Guide](https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_version.html).