AWS_IO_TLS_CIPHER_PREF_PQ_TLSv1_0_2021_05 is not supported now. (#727)

Author: TingDaoK

source/s2n/s2n_tls_channel_handler.c

@@ -268,8 +268,6 @@ bool aws_tls_is_cipher_pref_supported(enum aws_tls_cipher_pref cipher_pref) {
             return true;
             /* PQ Crypto no-ops on android for now */
 #ifndef ANDROID
-        case AWS_IO_TLS_CIPHER_PREF_PQ_TLSv1_0_2021_05:
-            return true;
         case AWS_IO_TLS_CIPHER_PREF_PQ_TLSV1_2_2024_10:
             return true;
         case AWS_IO_TLS_CIPHER_PREF_PQ_DEFAULT:
@@ -1541,9 +1539,6 @@ static struct aws_tls_ctx *s_tls_ctx_new(
             /* The specific PQ policy used here may change over time. */
             security_policy = "AWS-CRT-SDK-TLSv1.2-2023-PQ";
             break;
-        case AWS_IO_TLS_CIPHER_PREF_PQ_TLSv1_0_2021_05:
-            security_policy = "PQ-TLS-1-0-2021-05-26";
-            break;
         case AWS_IO_TLS_CIPHER_PREF_PQ_TLSV1_2_2024_10:
             security_policy = "AWS-CRT-SDK-TLSv1.2-2023-PQ";
             break;