crypto_config_test_driver_extension: remove leftover comment

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/include/test/drivers/crypto_config_test_driver_extension.h b/tests/include/test/drivers/crypto_config_test_driver_extension.h
index c88f5d8..4f3e5ad 100644
--- a/tests/include/test/drivers/crypto_config_test_driver_extension.h
+++ b/tests/include/test/drivers/crypto_config_test_driver_extension.h
@@ -232,7 +232,6 @@
 #endif
 #endif
 
-/* EC key pair derivation is not supported yet */
 #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE)
 #if defined(MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_KEY_PAIR_DERIVE)
 #undef MBEDTLS_PSA_ACCEL_KEY_TYPE_ECC_KEY_PAIR_DERIVE