old_contents: import click
  
  
  @click.group()
  @click.version_option()
  def cli():
      pass
  
  
  @cli.command()
  def hello():
      click.echo("Hello World!")
  
new_contents: import click
  
  
  @click.group()
  @click.version_option()
  def cli():
      pass
  
subject: Remove hello command