Make PSA crypto mandatory for TLS 1.3

As we want to move to PSA for cryptographic operations
let's mandate PSA crypto from the start.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/docs/use-psa-crypto.md b/docs/use-psa-crypto.md
index 6ec2dca..4a78e47 100644
--- a/docs/use-psa-crypto.md
+++ b/docs/use-psa-crypto.md
@@ -12,9 +12,8 @@
 `MBEDTLS_ECP_RESTARTABLE` and
 `MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER` to be disabled.
 
-Effect: `MBEDTLS_USE_PSA_CRYPTO` currently has no effect on TLS 1.3 (which is
-itself experimental and only partially supported so far): TLS 1.3 always uses
-the legacy APIs even when this option is set.
+Effect: `MBEDTLS_USE_PSA_CRYPTO` has no effect on TLS 1.3 for which PSA
+cryptography is mandatory.
 
 Stability: any API that's only available when `MBEDTLS_USE_PSA_CRYPTO` is
 defined is considered experimental and may change in incompatible ways at any
@@ -157,11 +156,6 @@
 
 This is only a high-level overview, grouped by theme
 
-TLS: 1.3 experimental support
------------------------------
-
-No part of the experimental support for TLS 1.3 is covered at the moment.
-
 TLS: key exchanges / asymmetric crypto
 --------------------------------------