Remove the OS Login NSS cache file.

def _RemoveOsLoginNssCache(self):
    """Remove the OS Login NSS cache file."""
    if os.path.exists(constants.OSLOGIN_NSS_CACHE):
      try:
        os.remove(constants.OSLOGIN_NSS_CACHE)
      except OSError as e:
        if e.errno != errno.ENOENT:
          raise