all.sh: fix comment in check_test_dependencies()

MBEDTLS_ASN1_WRITE_C is no more required for ECDSA conversion
functions.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/tests/scripts/all.sh b/tests/scripts/all.sh
index fddcc01..c4982b6 100755
--- a/tests/scripts/all.sh
+++ b/tests/scripts/all.sh
@@ -1064,10 +1064,6 @@
     # PSA_VENDOR_RSA_MAX_KEY_BITS. The legacy module is only used by
     # the test code and that's probably the most convenient way of achieving
     # the test's goal.
-    #
-    # MBEDTLS_ASN1_WRITE_C is also used in ECDSA conversion functions
-    # (in psa_util module) and, therefore, also in test_suite_psa_crypto_util.
-    # There is no PSA equivalent for this ASN1 symbols in PSA.
     echo "MBEDTLS_ASN1_WRITE_C" >> $expected
     # No PSA equivalent - we should probably have one in the future.
     echo "MBEDTLS_ECP_RESTARTABLE" >> $expected