old_contents: import argparse
  import logging
  import os.path
  
  from cStringIO import StringIO
  
  from . import exc
  from .cliutil import priority
  
  
  log = logging.getLogger(__name__)
  
  
  def forgetkeys(args):
      for f in [
          'mon',
          'client.admin',
          'bootstrap-osd',
          'bootstrap-mds',
          ]:
          os.unlink('{cluster}.{what}.keyring'.format(
                  cluster=args.cluster,
                  what=f,
                  ))
  
  @priority(100)
  def make(parser):
      """
      Remove authentication keys from the local directory.
      """
      parser.set_defaults(
          func=forgetkeys,
          )
  
new_contents: import argparse
  import logging
  
  from cStringIO import StringIO
  
  from .cliutil import priority
  
  
  log = logging.getLogger(__name__)
  
  
  def forgetkeys(args):
      import os
      for f in [
          'mon',
          'client.admin',
          'bootstrap-osd',
          'bootstrap-mds',
          ]:
          os.unlink('{cluster}.{what}.keyring'.format(
                  cluster=args.cluster,
                  what=f,
                  ))
  
  @priority(100)
  def make(parser):
      """
      Remove authentication keys from the local directory.
      """
      parser.set_defaults(
          func=forgetkeys,
          )
  
subject: remove unused, but imported modules