Remove token column from poll_voters table

As it is no longer used as originally pretended [1][2].

[1] Check consul/consul pull request 1994
[2] Check consul/consul pull request 3539

db/dev_seeds/polls.rb

@@ -146,8 +146,7 @@ section "Creating Poll Voters" do
                         document_number: user.document_number,
                         user: user,
                         poll: poll,
-                        origin: "web",
-                        token: SecureRandom.hex(32))
+                        origin: "web")
   end
 
   def randomly_answer_questions(poll, user)

db/migrate/20220915154808_remove_token_from_poll_voter.rb

@@ -0,0 +1,5 @@
+class RemoveTokenFromPollVoter < ActiveRecord::Migration[6.0]
+  def change
+    remove_column :poll_voters, :token, :string
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_11_03_112944) do
+ActiveRecord::Schema.define(version: 2022_09_15_154808) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_trgm"
@@ -1210,7 +1210,6 @@ ActiveRecord::Schema.define(version: 2021_11_03_112944) do
     t.integer "user_id"
     t.string "origin"
     t.integer "officer_id"
-    t.string "token"
     t.index ["booth_assignment_id"], name: "index_poll_voters_on_booth_assignment_id"
     t.index ["document_number"], name: "index_poll_voters_on_document_number"
     t.index ["officer_assignment_id"], name: "index_poll_voters_on_officer_assignment_id"