Remove test:sidekiq references

Rakefile

@@ -121,7 +121,7 @@ end
 namespace :test do
   task all: [:main,
              :rails,
-             :sidekiq, :monkey]
+             :monkey]
 
   Rake::TestTask.new(:main) do |t|
     t.libs << %w[test lib]
@@ -140,7 +140,6 @@ namespace :test do
 
   [
     :grape,
-    :sidekiq,
     :sucker_punch
   ].each do |contrib|
     Rake::TestTask.new(contrib) do |t|
@@ -256,7 +255,6 @@ task :ci do
     if RUBY_PLATFORM != 'java'
       # Contrib minitests
       sh 'bundle exec appraisal contrib-old rake test:monkey'
-      sh 'bundle exec appraisal contrib-old rake test:sidekiq'
       sh 'bundle exec appraisal contrib-old rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib-old rake spec:active_model_serializers'
@@ -320,7 +318,6 @@ task :ci do
     if RUBY_PLATFORM != 'java'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'
@@ -395,7 +392,6 @@ task :ci do
     if RUBY_PLATFORM != 'java'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'
@@ -475,7 +471,6 @@ task :ci do
       sh 'bundle exec rake benchmark'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'
@@ -540,7 +535,6 @@ task :ci do
       sh 'bundle exec rake benchmark'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'
@@ -615,7 +609,6 @@ task :ci do
       sh 'bundle exec rake benchmark'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'
@@ -689,7 +682,6 @@ task :ci do
       sh 'bundle exec rake benchmark'
       # Contrib minitests
       sh 'bundle exec appraisal contrib rake test:grape'
-      sh 'bundle exec appraisal contrib rake test:sidekiq'
       sh 'bundle exec appraisal contrib rake test:sucker_punch'
       # Contrib specs
       sh 'bundle exec appraisal contrib rake spec:action_pack'