fix various issues

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 304e61f..3fa303b 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -853,7 +853,6 @@
     else
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
     {
-        ssl->handshake->sig_algs = ssl->conf->sig_algs;
         ssl->handshake->sig_algs_heap_allocated = 0;
     }
 #endif /* !MBEDTLS_DEPRECATED_REMOVED */