Revert "Scale dns packet size with expected real servers"

This reverts commit 382dc9c.

haproxy.cfg/002-resolver.cfg

@@ -14,11 +14,10 @@
 
 resolvers system
     parse-resolv-conf
-    accepted_payload_size   512
-    hold valid              15s	# Don't query too often
+    hold valid    15s	# Don't query too often
     # DNS resolution errors
-    hold obsolete           5s	# If CNS removed it, we should as well
-    hold refused            3600s	# If system resolver is throttling us, ignore that
-    hold nx                 30s	# If resolution says this host doesn't exist
-    hold timeout            30s	# If the DNS server did not respond
-    hold other              30s	# Any other error
+    hold obsolete 5s	# If CNS removed it, we should as well
+    hold refused  3600s	# If system resolver is throttling us, ignore that
+    hold nx       30s	# If resolution says this host doesn't exist
+    hold timeout  30s	# If the DNS server did not respond
+    hold other    30s	# Any other error

reconfigure

@@ -45,17 +45,6 @@ function ensure_haproxy {
 }
 
 function configure_haproxy {
-    # By default haproxy doesn't accept packets over 512b, so if we're scaling
-    # the maximum number of servers, we also need to scale the size of DNS
-    # response we can handle.
-    max_rs=$(mdata-get cloud.tritoncompute:max_rs)
-    # If max_rs isn't set in metadata, default to 32.
-    payload_size=$(( 16 * ${max_rs:=32} ))
-    # Use three spaces to align columns.
-    if ! grep -q "accepted_payload_size   ${payload_size}"; then
-        sed -i'' "s/accepted_payload_size .*/accepted_payload_size   $payload_size/" "${TOP}/haproxy.cfg/002-resolver.cfg"
-    fi
-
     rsync -a "${skel_config_dir}/" "${candidate_config_dir}/"
     {
         printf '#                                                  #\n'