diff --git a/staging/src/k8s.io/apiserver/pkg/server/filters/goaway_test.go b/staging/src/k8s.io/apiserver/pkg/server/filters/goaway_test.go
index 7a1dfe69cb2..a3f3b62aa52 100644
--- a/staging/src/k8s.io/apiserver/pkg/server/filters/goaway_test.go
+++ b/staging/src/k8s.io/apiserver/pkg/server/filters/goaway_test.go
@@ -105,10 +105,6 @@ var (
 	// for watch request, test GOAWAY server push 1 byte in every second.
 	responseBody = []byte("hello")
 
-	// responseBodySize is the size of response body which test GOAWAY server sent for watch request,
-	// used to check if watch request was broken by GOAWAY frame.
-	responseBodySize = len(responseBody) //nolint:unused
-
 	// requestPostBody is the request body which client must send to test GOAWAY server for POST method,
 	// otherwise, test GOAWAY server will respond 400 HTTP status code.
 	requestPostBody = responseBody