bug#44953: lsof: LTlock test consistently fails (possibly due to btrfs)

[Mark H Weaver]

I should mention that 'gnome' depends on 'lsof' via the following
dependency path (among others):

gnome -> gnome-shell -> ruby-sass -> ruby-sass-spec -> ruby-terminfo ->
   ruby-rdoc -> ruby-rubocop -> ruby-parallel -> lsof

      Mark