The only other topic I found about this was old, so I'm making a new one.
Using the command /voteclearspambricks or /voteclearspam starts a vote on the server to clear spam bricks. Pretty self-explanatory. If more than half the people on a server vote for clearing spam bricks, the command is executed.
I think this would be great for servers where admins are gone or AFK, and spam gets too out of hand.