Inability to remove dashlane plugin

i no longer use Dashlane on my computer. unable to uninstall from list of plugins even though it was disabled.

how do i uninstall so it does not appear in the list?

Globally-installed add-ons can’t be removed from Firefox, but they usually can be removed if you remove the software that installed them. So, removing Dashlane could remove the extension. Otherwise, you would need to locate the XPI file and delete it manually. Deleting it and restarting Firefox should remove it from the list.