clarify type validation section

Author: devalog

fern/products/api-def/ferndef-pages/types.mdx

@@ -282,7 +282,7 @@ interface Person {
 
 ### Validating types
 
-You can add validation constraints to your types (both aliases and references) to ensure data integrity. Validation constracts are automatically enforced in generated SDKs.
+You can add validation constraints to your types (both aliases and references) to ensure data integrity. These validation constraints are included in generated SDKs for documentation purposes, but actual validation is deferred to the server.
 
 <CodeBlock title="Fern Definition">
 ```yaml {8-11, 15-17}
@@ -305,30 +305,6 @@ types:
           max: 150
 ```
 </CodeBlock>
-<CodeBlock title="Generated TypeScript SDK from Fern Definition">
-
-```typescript
-interface Person {
-  /** The person's full name */
-  name: string;
-  /** Age in years */
-  age: number;
-}
-
-// Validation is automatically enforced when creating Person objects
-const client = new YourApiClient();
-try {
-  const person = await client.createPerson({
-    name: "A",           // Fails minLength validation
-    age: -5,             // Fails min validation
-  });
-} catch (error) {
-  if (error instanceof ValidationError) {
-    console.log(`Validation failed: ${error.message}`);
-  }
-}
-```
-</CodeBlock>
 
 <AccordionGroup>
 <Accordion title="String validation reference">