disable the threshold until we have better options (#574)

Author: TingDaoK

source/s3_util.c

@@ -66,7 +66,8 @@ const uint32_t g_s3_max_num_upload_parts = 10000;
 const size_t g_s3_min_upload_part_size = MB_TO_BYTES(5);
 const size_t g_streaming_buffer_size = MB_TO_BYTES(8);
 const double g_default_throughput_target_gbps = 10.0;
-const uint64_t g_streaming_object_size_threshold = TB_TO_BYTES(2);
+/* TODO: disable this threshold until we have a better option for threshold */
+const uint64_t g_streaming_object_size_threshold = UINT64_MAX;
 
 void copy_http_headers(const struct aws_http_headers *src, struct aws_http_headers *dest) {
     AWS_PRECONDITION(src);