Merge pull request #50503 from karataliu/mount_clean

Automatic merge from submit-queue (batch tested with PRs 43016, 50503, 51281, 51518, 51582). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>..

Clean up diskLooksUnformatted literal

**What this PR does / why we need it**:
#16948 moved the `formatAndMount` function to mount_linux.go, but `diskLooksUnformatted` does not necessarily need to appear in mount_unsupported.go
#31515 Renames `diskLooksUnformatted` to `getDiskFormat`, but did not update the comment

This is to do the small cleanup.

**Which issue this PR fixes**

**Special notes for your reviewer**:

**Release note**:

pkg/util/mount/mount_linux.go

@@ -424,7 +424,7 @@ func (mounter *SafeFormatAndMount) formatAndMount(source string, target string,
 	return mountErr
 }
 
-// diskLooksUnformatted uses 'lsblk' to see if the given disk is unformated
+// getDiskFormat uses 'lsblk' to see if the given disk is unformated
 func (mounter *SafeFormatAndMount) getDiskFormat(disk string) (string, error) {
 	args := []string{"-n", "-o", "FSTYPE", disk}
 	glog.V(4).Infof("Attempting to determine if disk %q is formatted using lsblk with args: (%v)", disk, args)

pkg/util/mount/mount_unsupported.go

@@ -74,7 +74,3 @@ func (mounter *Mounter) MakeRShared(path string) error {
 func (mounter *SafeFormatAndMount) formatAndMount(source string, target string, fstype string, options []string) error {
 	return nil
 }
-
-func (mounter *SafeFormatAndMount) diskLooksUnformatted(disk string) (bool, error) {
-	return true, nil
-}