There are no such spells actually "in the game" anymore.

There some reminants of old string tables left in the dats for stuff that has been removed, but since newer spells aren't in that list, you can tell the game isn't using it.

Many spells were "in the game" as could be determined by using /recast "spell name" to see if it existed. However any spell for which that worked was effectively removed in an update. Some of these spells were re-added later (e.g. pro/shell V)

Basically every other spell in the dats is a spell used by monsters that isn't available to players.