chore(stream): remove unused StreamRequestPayload test

agent/pkg/agent/stream/payload_test.go

@@ -1,7 +1,6 @@
 package stream
 
 import (
-	"bytes"
 	"testing"
 )
 
@@ -25,29 +24,3 @@ func TestStreamRequestHeader_RoundTripAndChecksum(t *testing.T) {
 		t.Fatalf("unexpected host/port: %q:%q", host, port)
 	}
 }
-
-func TestStreamRequestPayload_WriteTo_WritesFullHeader(t *testing.T) {
-	h, err := NewStreamRequestHeader("127.0.0.1", "53")
-	if err != nil {
-		t.Fatalf("NewStreamRequestHeader: %v", err)
-	}
-
-	p := &StreamRequestPayload{StreamRequestHeader: *h, Data: []byte("hello")}
-
-	var out bytes.Buffer
-	n, err := p.WriteTo(&out)
-	if err != nil {
-		t.Fatalf("WriteTo: %v", err)
-	}
-	if int(n) != headerSize+len(p.Data) {
-		t.Fatalf("unexpected bytes written: got %d want %d", n, headerSize+len(p.Data))
-	}
-
-	written := out.Bytes()
-	if len(written) != headerSize+len(p.Data) {
-		t.Fatalf("unexpected output size: got %d", len(written))
-	}
-	if !bytes.Equal(written[:headerSize], h.Bytes()) {
-		t.Fatalf("expected full header (including checksum) to be written")
-	}
-}