feat: add launch pallet removal migration#358

wischli merged 1 commit intowf-1946-polkadot-0.9.19KILTprotocol/kilt-node:wf-1946-polkadot-0.9.19from

wf-1951-rm-launch-palletKILTprotocol/kilt-node:wf-1951-rm-launch-palletCopy head branch name to clipboard