Drop anti voters table.

db/migrate/20190827234625_drop_anti_voters.rb

@@ -0,0 +1,7 @@
+require_relative "20160919234407_create_anti_voters"
+
+class DropAntiVoters < ActiveRecord::Migration[6.0]
+  def change
+    revert CreateAntiVoters
+  end
+end