Revert "Add use-proxy support to health extra args (#2973)"

This reverts commit 11d8d917f2.

docs/misc/autopause-autostop/autostop.md

@@ -25,6 +25,3 @@ The following environment variables define the behavior of auto-stopping:
   describes period of the daemonized state machine, that handles the stopping of the server
 
 > To troubleshoot, add `DEBUG_AUTOSTOP=true` to see additional output
-
-## Proxy Support
-If you make use of PROXY Protocol, i.e. through something like HAProxy or Fly.io, you will need to enable it in your variety of server's configuration, and then set the `USES_PROXY_PROTOCOL` envar to `true`. This lets Autostop monitor the server, where it otherwise wouldn't

scripts/start-finalExec

@@ -227,12 +227,6 @@ MC_HEALTH_EXTRA_ARGS=(
   --use-server-list-ping
 )
   " > /data/.mc-health.env
-elif isTrue "$USES_PROXY_PROTOCOL"; then
-  echo "
-MC_HEALTH_EXTRA_ARGS=(
-  --use-proxy
-)
-  " > /data/.mc-health.env
 else
   rm -f /data/.mc-health.env
 fi