all: sync with master; upd chlog

internal/aghnet/net_internal_test.go

@@ -7,7 +7,6 @@ import (
 	"io/fs"
 	"net"
 	"net/netip"
-	"os"
 	"strings"
 	"testing"
 
@@ -18,9 +17,6 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-// testdata is the filesystem containing data for testing the package.
-var testdata fs.FS = os.DirFS("./testdata")
-
 // substRootDirFS replaces the aghos.RootDirFS function used throughout the
 // package with fsys for tests ran under t.
 func substRootDirFS(t testing.TB, fsys fs.FS) {