I was running Peppermint 7 until today, and decided to do a fresh install of Peppermint 8.
Everything is wonderful so far, but I noticed that in synaptic the status of 4 packages (adobe-flash-properties-gtk, adobe-flashplugin, plymouth-theme-peppermint-7-spin, plymouth-theme-peppermint-7-spin) is labeled "Installed (local or obsolete)".
It seems that these are not referenced in any repo, so my question is "could I uninstall them safely?" Both plymouth themes have "peppermint-7" in their description, so I assume that these should be remains from the previous Peppermint OS version...
Here is an illustration:
