Update tweaks.conf

etc/nginx/conf.d/tweaks.conf

@@ -3,7 +3,6 @@
   http2_max_field_size 16k;
   http2_max_header_size 32k;
 
-  keepalive_disable msie6;
   large_client_header_buffers 8 64k;
 
   open_file_cache max=50000 inactive=60s;