Remove unnecessary code

It looks like these variables were left by accident. The Ruby
interpreter was giving us warnings about unused variables.

app/models/abilities/tracker.rb

@@ -3,8 +3,6 @@ class Tracker
  include CanCan::Ability
 
  def initialize(user)
- tracker = user.tracker
-
  can :index, Budget
  can [:index, :show, :edit], Budget::Investment
  can :manage, Milestone

spec/features/admin/poll/shifts_spec.rb

@@ -8,7 +8,6 @@
  end
 
  scenario "Show" do
- poll = create(:poll)
  officer = create(:poll_officer)
 
  booth1 = create(:poll_booth)
@@ -246,7 +245,6 @@
  end
 
  scenario "Destroy an officer" do
- poll = create(:poll)
  booth = create(:poll_booth)
  officer = create(:poll_officer)
 
@@ -261,7 +259,6 @@
  end
 
  scenario "Empty" do
- poll = create(:poll)
  booth = create(:poll_booth)
 
  visit new_admin_booth_shift_path(booth)

spec/features/admin/stats_spec.rb

@@ -388,8 +388,6 @@
  end
 
  scenario "Participants by poll" do
- oa = create(:poll_officer_assignment)
-
  poll1 = create(:poll)
  poll2 = create(:poll)
 

spec/features/budgets/investments_spec.rb

@@ -1760,7 +1760,6 @@ def investments_order
  scenario "Due to being unfeasible" do
  user = create(:user, :level_two)
  investment = create(:budget_investment, :selected, heading: heading)
- heading2 = create(:budget_heading, group: group)
 
  ballot = create(:budget_ballot, user: user, budget: budget)
  ballot.investments << investment

spec/features/direct_messages_spec.rb

@@ -60,7 +60,6 @@
  end
 
  scenario "User not logged in" do
- sender = create(:user)
  receiver = create(:user)
 
  visit new_user_direct_message_path(receiver)

spec/features/polls/answers_spec.rb

@@ -39,12 +39,11 @@
  end
 
  scenario "Add video to answer" do
- answer1 = create(:poll_question_answer, question: question)
- answer2 = create(:poll_question_answer, question: question)
+ answer = create(:poll_question_answer, question: question)
 
  visit admin_question_path(question)
 
- within("#poll_question_answer_#{answer1.id}") do
+ within("#poll_question_answer_#{answer.id}") do
  click_link "Video list"
  end
 
@@ -55,7 +54,7 @@
 
  click_button "Save"
 
- within("#poll_question_answer_video_#{answer1.videos.last.id}") do
+ within("#poll_question_answer_video_#{answer.videos.last.id}") do
  expect(page).to have_content "Awesome project video"
  expect(page).to have_content "https://www.youtube.com/watch?v=123"
  end

spec/features/polls/voter_spec.rb

@@ -50,8 +50,6 @@
  end
 
  scenario "Voting in booth", :js do
- user = create(:user, :in_census)
-
  login_through_form_as_officer(officer.user)
 
  visit new_officing_residence_path

spec/models/poll/shift_spec.rb

@@ -58,7 +58,6 @@
 
  it "creates and destroy corresponding officer_assignments" do
  poll2 = create(:poll)
- poll3 = create(:poll)
 
  booth_assignment1 = create(:poll_booth_assignment, poll: poll, booth: booth)
  booth_assignment2 = create(:poll_booth_assignment, poll: poll2, booth: booth)

spec/models/signature_spec.rb

@@ -183,7 +183,6 @@
  it "creates a user with that document number" do
  create(:geozone, census_code: "01")
  signature = create(:signature, document_number: "12345678Z")
- proposal = signature.signable
 
  signature.verify