No other headers are included by mbedtls_config.h

These have been moved to build_info.h. Update the documentation to
reflect this.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/docs/3.0-migration-guide.d/split_config.md b/docs/3.0-migration-guide.d/split_config.md
index 9893261..6f433c5 100644
--- a/docs/3.0-migration-guide.d/split_config.md
+++ b/docs/3.0-migration-guide.d/split_config.md
@@ -9,7 +9,7 @@
 
 Also, if you have a custom configuration file:
 
-* Don't include `check_config.h` anymore.
+* Don't include `check_config.h` or `config_psa.h` anymore.
 * Don't define `MBEDTLS_CONFIG_H` anymore.
 
 A config file version symbol, `MBEDTLS_CONFIG_VERSION` was introduced.
diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index aa8bcd2..e38892d 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -20,11 +20,6 @@
  *  limitations under the License.
  */
 
-/*
- * It is recommended to include this file from your mbedtls_config.h
- * in order to catch dependency issues early.
- */
-
 #ifndef MBEDTLS_CHECK_CONFIG_H
 #define MBEDTLS_CHECK_CONFIG_H
 
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index 3a4189d..a60db7e 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -1743,10 +1743,6 @@
  * Uncomment this to enable use of PSA Crypto configuration settings which
  * can be found in include/psa/crypto_config.h.
  *
- * If you enable this option and write your own configuration file, you must
- * include mbedtls/config_psa.h in your configuration file. The default
- * provided mbedtls/mbedtls_config.h contains the necessary inclusion.
- *
  * This feature is still experimental and is not ready for production since
  * it is not completed.
  */