remove code disabled since 0.1.29 version
diff --git a/src/http/ngx_http_header_filter_module.c b/src/http/ngx_http_header_filter_module.c
index 2379111..ef17911 100644
--- a/src/http/ngx_http_header_filter_module.c
+++ b/src/http/ngx_http_header_filter_module.c
@@ -132,10 +132,6 @@
ngx_http_header_out_t ngx_http_headers_out[] = {
{ ngx_string("Server"), offsetof(ngx_http_headers_out_t, server) },
{ ngx_string("Date"), offsetof(ngx_http_headers_out_t, date) },
-#if 0
- { ngx_string("Content-Type"),
- offsetof(ngx_http_headers_out_t, content_type) },
-#endif
{ ngx_string("Content-Length"),
offsetof(ngx_http_headers_out_t, content_length) },
{ ngx_string("Content-Encoding"),