Fix go fmt error (#23474)

Abacn · web-flow · commit b5ed5488cfef · 2022-10-04T09:29:49.000-04:00
diff --git a/sdks/go/pkg/beam/transforms/filter/distinct_test.go b/sdks/go/pkg/beam/transforms/filter/distinct_test.go
@@ -30,7 +30,6 @@ package filter_test
 //     - strings
 //     - numbers
 
-
 import (
 	"testing"
 
