[nrf noup] samples: psa_crypto: Remove support for Nordic boards

We have our own psa crypto samples to show how to used PSA crypto with
NCS.

This sample still uses CONFIG_MBEDTLS_BUILTIN which is not supported
anymore, therefore removing the support for it in NCS.

Ref: NCSDK-17944
Signed-off-by: Markus Swarowsky <[email protected]>
(cherry picked from commit 27f225d)

Author: mswarowsky

samples/tfm_integration/psa_crypto/sample.yaml

@@ -16,8 +16,6 @@ tests:
     platform_allow:
       - mps2/an521/cpu0/ns
       - v2m_musca_s1/musca_s1/ns
-      - nrf5340dk/nrf5340/cpuapp/ns
-      - nrf9160dk/nrf9160/ns
       - stm32l562e_dk/stm32l562xx/ns
       - bl5340_dvk/nrf5340/cpuapp/ns
       - max32657evkit/max32657/ns