Mono Black players never had the chance to destroy enchantments in the past. Thankfully, Wizards of the Coast printed Feed the Swarm, which allows all black commander players to stand a chance against Rest In Peace, Ground Seal, and Leyline of the Void enchantments.
The only other card that could be used prior to this was Pharika's Libation. But it did not have a targeted removal ability, and simply asked an opponent to sacrifice one of their enchantments, which is totally useless if they control more than one enchantment.
Now that problem for Mono Black players has finally been solved.