Merge pull request #117198 from charles-chenzz/deprecated_function

replace ioutil with os, update doc in kubelet

pkg/util/filesystem/defaultfs.go

@@ -85,7 +85,7 @@ func (fs *DefaultFs) RemoveAll(path string) error {
 	return os.RemoveAll(fs.prefix(path))
 }
 
-// Remove via os.RemoveAll
+// Remove via os.Remove
 func (fs *DefaultFs) Remove(name string) error {
 	return os.Remove(fs.prefix(name))
 }

pkg/util/filesystem/filesystem.go

@@ -33,7 +33,7 @@ type Filesystem interface {
 	RemoveAll(path string) error
 	Remove(name string) error
 
-	// from "io/ioutil"
+	// from "os"
 	ReadFile(filename string) ([]byte, error)
 	TempDir(dir, prefix string) (string, error)
 	TempFile(dir, prefix string) (File, error)