Remove redundant docs on TypeBox properties (#4095)

docs/Reference/Type-Providers.md

@@ -70,14 +70,7 @@ import { Type } from '@sinclair/typebox'
 
 import fastify from 'fastify'
 
-const server = fastify({
-    ajv: {
-        customOptions: {
-            strict: 'log',
-            keywords: ['kind', 'modifier'],
-        },
-    },
-}).withTypeProvider<TypeBoxTypeProvider>()
+const server = fastify().withTypeProvider<TypeBoxTypeProvider>()
 
 server.get('/route', {
     schema: {
@@ -94,13 +87,6 @@ server.get('/route', {
 })
 ```
 
-TypeBox uses the properties `kind` and `modifier` internally. These properties
-are not strictly valid JSON schema which will cause `AJV@7` and newer versions
-to throw an invalid schema error. To remove the error it's either necessary to
-omit the properties by using
-[`Type.Strict()`](https://github.com/sinclairzx81/typebox#strict) or use the AJV
-options for adding custom keywords.
-
 See also the [TypeBox
 documentation](https://github.com/sinclairzx81/typebox#validation) on how to set
 up AJV to work with TypeBox.