all: sync with master

internal/aghos/os_unix.go

@@ -1,22 +1,11 @@
-//go:build darwin || freebsd || linux || openbsd
+//go:build unix
 
 package aghos
 
 import (
 	"os"
-	"os/signal"
-
-	"golang.org/x/sys/unix"
 )
 
-func notifyReconfigureSignal(c chan<- os.Signal) {
-	signal.Notify(c, unix.SIGHUP)
-}
-
-func isReconfigureSignal(sig os.Signal) (ok bool) {
-	return sig == unix.SIGHUP
-}
-
 func sendShutdownSignal(_ chan<- os.Signal) {
 	// On Unix we are already notified by the system.
 }