Adapt LibreOfficeFlatpak.conf to newly added dependencies

...that are all not provided by the underlying GNOME 3.20 SDK/runtime

Change-Id: I23f1a462f8bf44a30c09bbccad5916304d7c4da1

distro-configs/LibreOfficeFlatpak.conf

@@ -26,10 +26,13 @@
 --without-system-libodfgen
 --without-system-libpagemaker
 --without-system-librevenge
+--without-system-libstaroffice
+--without-system-libtommath
 --without-system-libvisio
 --without-system-libwpd
 --without-system-libwpg
 --without-system-libwps
+--without-system-libzmf
 --without-system-lpsolve
 --without-system-mdds
 --without-system-mythes