docs: Update documenting-headers.mdx

Remove duplicated section im comparison to messages

docs/configuration/documenting-headers.mdx

@@ -54,78 +54,3 @@ public void sendMessage(ExamplePayloadDto msg) {
     // process
 }
 ```
-
-## Schema
-
-Under the hood Springwolf relies on swagger-core `ModelConverters` to define the message schema.
-
-By default, the type and example values for the properties are guessed.
-The default Jackson `ModelResolver` supports schema definitions via `@Schema` to overwrite the property definitions.
-
-### Using `@Schema`
-
-The `@Schema` annotation allows to set many properties like `description`, `example`, `requiredMode`, `minimum` to document payloads.
-
-All properties are part of the produced AsyncAPI file. However, not all are displayed in `springwolf-ui` (see [#378](https://github.com/springwolf/springwolf-core/issues/378))
-
-#### Usage
-
-Add the following dependency:
-
-<Tabs>
-  <TabItem value="Groovy" label="Groovy" default>
-    <CodeBlock language="groovy">{CodeSchemaGroovy}</CodeBlock>
-  </TabItem>
-  <TabItem value="Maven" label="Maven">
-    <CodeBlock language="xml">{CodeSchemaMaven}</CodeBlock>
-  </TabItem>
-</Tabs>
-
-Then, add the `@Schema` annotation to the payload class:
-
-<!-- vale off -->
-```java
-import io.swagger.v3.oas.annotations.media.Schema;
-import static io.swagger.v3.oas.annotations.media.Schema.RequiredMode.REQUIRED;
-
-@Schema(description = "Example payload model")
-public class ExamplePayloadDto {
-    @Schema(description = "Some string field", example = "some string value", requiredMode = REQUIRED)
-    private String someString;
-
-    public String getSomeString() {
-        return someString;
-    }
-}
-```
-<!-- vale on -->
-
-:::note
-The `@AsyncMessage.description` field will always override the `@Schema` description if provided
-:::
-
-For a full example, take a look at [ExamplePayloadDto.java in `springwolf-amqp-example`](https://github.com/springwolf/springwolf-core/blob/master/springwolf-examples/springwolf-amqp-example/src/main/java/io/github/springwolf/examples/amqp/dtos/ExamplePayloadDto.java)
-
-#### Primitive, final and external classes
-
-When the `@Schema` annotation can't be attached to the payload class (that's `java.lang.String`), the payload can be wrapped in an envelope class. The actual payload is a field within this class (`StringEnvelope`), marked using `@AsyncApiPayload` and documented using the `@Schema` annotation.
-
-```java
-@AsyncListener( operation = @AsyncOperation( channelName = TOPIC,
-     payloadType = StringEnvelope.class) // <- envelope class
-)
-public void receiveStringPayload(String stringPayload) { // <- The original class is used here
-    // ...
-}
-
-@Data
-static class StringEnvelope {
-    @AsyncApiPayload // <- The annotation marker
-    @Schema(description = "Payload description using @Schema annotation and @AsyncApiPayload within envelope class")
-    private final String payload;
-}
-```
-
-:::info
-See [Add-Ons](../add-ons) for more information on how to document other formats
-:::