Remove tasks to upgrade to version 1.1

These tasks are not needed for new installations, and in existing
installations they've already been executed when upgrading to version
1.1.

One of them also raises a warning in Rails 5.2:

DEPRECATION WARNING: Dangerous query method (method whose arguments are
used as raw SQL) called with non-attribute argument(s): "MIN(id) as id".
Non-attribute arguments will be disallowed in Rails 6.0. This method
should not be called with user-provided values, such as request
parameters or model attributes. Known-safe values can be passed by
wrapping them in Arel.sql()

config/deploy.rb

@@ -48,11 +48,9 @@ namespace :deploy do
   after :updating, "rvm1:install:rvm"
   after :updating, "rvm1:install:ruby"
   after :updating, "install_bundler_gem"
-  before "deploy:migrate", "remove_local_census_records_duplicates"
 
   after "deploy:migrate", "add_new_settings"
 
-  before :publishing, "smtp_ssl_and_delay_jobs_secrets"
   after  :publishing, "setup_puma"
 
   after :published, "deploy:restart"
@@ -76,16 +74,6 @@ task :install_bundler_gem do
   end
 end
 
-task :remove_local_census_records_duplicates do
-  on roles(:db) do
-    within release_path do
-      with rails_env: fetch(:rails_env) do
-        execute :rake, "local_census_records:remove_duplicates"
-      end
-    end
-  end
-end
-
 task :refresh_sitemap do
   on roles(:app) do
     within release_path do
@@ -116,49 +104,12 @@ task :execute_release_tasks do
   end
 end
 
-desc "Create pid and socket folders needed by puma and convert unicorn sockets into symbolic links \
-      to the puma socket, so legacy nginx configurations pointing to the unicorn socket keep working"
+desc "Create pid and socket folders needed by puma"
 task :setup_puma do
   on roles(:app) do
     with rails_env: fetch(:rails_env) do
       execute "mkdir -p #{shared_path}/tmp/sockets; true"
       execute "mkdir -p #{shared_path}/tmp/pids; true"
-
-      if test("[ -e #{shared_path}/tmp/sockets/unicorn.sock ]")
-        execute "ln -sf #{shared_path}/tmp/sockets/puma.sock #{shared_path}/tmp/sockets/unicorn.sock; true"
-      end
-
-      if test("[ -e #{shared_path}/sockets/unicorn.sock ]")
-        execute "ln -sf #{shared_path}/tmp/sockets/puma.sock #{shared_path}/sockets/unicorn.sock; true"
-      end
-    end
-  end
-end
-
-task :smtp_ssl_and_delay_jobs_secrets do
-  on roles(:app) do
-    if test("[ -d #{current_path} ]")
-      within current_path do
-        with rails_env: fetch(:rails_env) do
-          tasks_file_path = "lib/tasks/secrets.rake"
-          shared_secrets_path = "#{shared_path}/config/secrets.yml"
-
-          unless test("[ -e #{current_path}/#{tasks_file_path} ]")
-            begin
-              unless test("[ -w #{shared_secrets_path} ]")
-                execute "sudo chown `whoami` #{shared_secrets_path}"
-                execute "chmod u+w #{shared_secrets_path}"
-              end
-
-              execute "cp #{release_path}/#{tasks_file_path} #{current_path}/#{tasks_file_path}"
-
-              execute :rake, "secrets:smtp_ssl_and_delay_jobs"
-            ensure
-              execute "rm #{current_path}/#{tasks_file_path}"
-            end
-          end
-        end
-      end
     end
   end
 end