Disable Blocks

Completely disable blocks

Requires ItemsAdder 4.0.13+

If you do not use custom blocks you can optimize the plugin by disabling them.

config.yml

blocks:
  custom:
    note: false
    mushroom: false
    chorus: false
    wire: false
    fire: false
  worlds: []

Also delete the itemsadder folder from each of your worlds (make a backup before doing that, just in case).