Revert "[5.3] Fix regression in save(touch) option"

[themsaid]

Reverts #15264

This feature doesn't work because the update method of Eloquent/Builder adds the updated_at column anyway, we already removed the timestamp option before #12617 based on this #12403 (comment)

To prevent touching the model timestamp we should use this instead:

$user->timestamps = false;

$user->save();