[hotfix][docs] drop unused io overview
diff --git a/docs/content/_index.md b/docs/content/_index.md
index 3ae0861..308c037 100644
--- a/docs/content/_index.md
+++ b/docs/content/_index.md
@@ -13,6 +13,8 @@
- /docs/getting-started/python_walkthrough/
- /getting-started/java_walkthrough.html
- /docs/getting-started/java_walkthrough/
+ - /docs/modules/io/overview/
+ - /modules/io/
---
<!--
Licensed to the Apache Software Foundation (ASF) under one
diff --git a/docs/content/docs/modules/io/overview.md b/docs/content/docs/modules/io/overview.md
deleted file mode 100644
index a49462e..0000000
--- a/docs/content/docs/modules/io/overview.md
+++ /dev/null
@@ -1,36 +0,0 @@
----
-title: 'Overview'
-weight: 1
-type: docs
-aliases:
- - /modules/io/
-permalink: /modules/io/index.html
----
-<!--
-Licensed to the Apache Software Foundation (ASF) under one
-or more contributor license agreements. See the NOTICE file
-distributed with this work for additional information
-regarding copyright ownership. The ASF licenses this file
-to you under the Apache License, Version 2.0 (the
-"License"); you may not use this file except in compliance
-with the License. You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing,
-software distributed under the License is distributed on an
-"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-KIND, either express or implied. See the License for the
-specific language governing permissions and limitations
-under the License.
--->
-
-# I/O Module
-
-Stateful Functions' I/O modules allow functions to receive and send messages to external systems.
-Based on the concept of Ingress (input) and Egress (output) points, and built on top of the Apache Flink® connector ecosystem, I/O modules enable functions to interact with the outside world through the style of message passing.
-
-Commonly used I/O modules are bundled into the runtime by default and can be configured directly via the applications [module configuration]({{< ref "docs/modules/overview" >}}).
-Additionally, custom connectors for other systems can be [plugged in]({{< ref "docs/modules/io/flink-connectors" >}}) to the runtime.
-
-Remember, to use one of these connectors in an application, third-party components are usually required, e.g., servers for the data stores or message queues.
