remove the no-longer-needed sudo class

manifests/sudo.pp

-class su_debuild::sudo (
-  Boolean $manage_pamd_sudo = false,
-)
-{
-
-  ### SUDO ###
-  ensure_packages(['sudo'], {'ensure' => 'present'})
-
-  # Install a sudo configuration letting mortals run pdebuild.
-  file_line { 'sudo_rule_for_pdebuild':
-    path => '/etc/sudoers',
-    line => '%root      ALL = NOPASSWD: /usr/sbin/cowbuilder',
-  }
-
-  # Ignore the pbuilder sudos.
-  file { '/etc/filter-syslog/pbuilder':
-    source => 'puppet:///modules/su_debuild/etc/filter-syslog/pbuilder';
-  }
-
-  if ($manage_pamd_sudo) {
-    # To be able to run cowbuilder in AFS, we need to use a special version of
-    # /etc/pam.d/sudo.
-    file {
-      '/etc/pam.d/sudo':
-        source  => 'puppet:///modules/su_debuild/etc/pam.d/sudo',
-        require => Package['sudo'];
-    }
-  }
-
-}