Remove DES handling from error generator

Signed-off-by: Ari Weiler-Ofek <ariwei01@e134794.arm.com>
diff --git a/scripts/generate_errors.pl b/scripts/generate_errors.pl
index 977047a..6912679 100755
--- a/scripts/generate_errors.pl
+++ b/scripts/generate_errors.pl
@@ -36,7 +36,7 @@
 my $error_format_file = $data_dir.'/error.fmt';
 
 my @low_level_modules = qw( AES ARIA ASN1 BASE64 BIGNUM
-                            CAMELLIA CCM CHACHA20 CHACHAPOLY CMAC CTR_DRBG DES
+                            CAMELLIA CCM CHACHA20 CHACHAPOLY CMAC CTR_DRBG
                             ENTROPY ERROR GCM HKDF HMAC_DRBG LMS MD5
                             NET PBKDF2 PLATFORM POLY1305 RIPEMD160
                             SHA1 SHA256 SHA512 SHA3 THREADING );