You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: remove_public_key.rb
    path of file: ./repos/vagrant/plugins/guests/openwrt/cap
    
    the code of the file until where you have to start completion: # Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: BUSL-1.1

require "vagrant/util/shell_quote"

module VagrantPlugins
  module GuestOpenWrt
    module Cap
      class RemovePublicKey
        def self.remove_public_key(machine, contents)
          contents = contents.chomp
          conten
    
        def self.remove_public_key(machine, contents)
          contents = contents.chomp
          contents = Vagrant::Util::ShellQuote.escape(contents, "'")

          machine.communicate.tap do |comm|
            comm.execute <<~EOH
              if test -f /etc/dropbear/authorized_keys ; then
                sed -i '/^.*#{contents}.*$/d' /etc/dropbear/authorized_keys
              fi
            EOH
          end
        end