only go mod

cmd/tools/copyright/licensegen.go

@@ -21,7 +21,6 @@
 package main
 
 import (
-	"bufio"
 	"flag"
 	"fmt"
 	"io"
@@ -90,10 +89,7 @@ func (task *addLicenseHeaderTask) run() error {
 		return fmt.Errorf("error reading license file, errr=%v", err.Error())
 	}
 
-	task.license, err = commentOutLines(string(data))
-	if err != nil {
-		return fmt.Errorf("copyright header check failed, err=%v", err.Error())
-	}
+	task.license = string(data)
 
 	err = filepath.Walk(task.config.rootDir, task.handleFile)
 	if err != nil {
@@ -173,16 +169,3 @@ func mustProcessPath(path string) bool {
 func isEOF(err error) bool {
 	return err == io.EOF || err == io.ErrUnexpectedEOF
 }
-
-func commentOutLines(str string) (string, error) {
-	var lines []string
-	scanner := bufio.NewScanner(strings.NewReader(str))
-	for scanner.Scan() {
-		lines = append(lines, "// "+scanner.Text()+"\n")
-	}
-
-	if err := scanner.Err(); err != nil {
-		return "", err
-	}
-	return strings.Join(lines, ""), nil
-}