Remove `node-red-contrib-sequence-functions` nodes as the similar nodes are now included as core nodes as of v0.18.0
Remove `node-red-contrib-sequence-functions` nodes as the similar nodes are now included as core nodes as of v0.18.0

CANDY-LINE/candy-red,dbaba/candy-red,dbaba/candy-red,CANDY-LINE/candy-red,dbaba/candy-red,CANDY-LINE/candy-red