dead specs as in completely unplayable and has no place in competitive bgs -
demo lock
prot paladin
fire mage (?)
feral druid
ele shaman
enh shaman
holy priest
assassin rogue
sub rogue (?)
mw monk (healing sucks, dmg is absurd if you can stack)
resto druid healing (top tier FC ofc but healing mid, no chance)
fury warrior (some ppl say its viable but ive never seen anyone play it)