DEV: No need to pause Sidekiq during backups.

This was done for historical reasons where we stop all writes going to
the DB during a backup by setting the database to readonly mode.

lib/backup_restore/backuper.rb

@@ -33,14 +33,7 @@ module BackupRestore
       ensure_directory_exists(@archive_directory)
 
       update_metadata
-
-      begin
-        pause_sidekiq
-        wait_for_sidekiq
-        dump_public_schema
-      ensure
-        unpause_sidekiq
-      end
+      dump_public_schema
 
       log "Finalizing backup..."
 
@@ -127,32 +120,6 @@ module BackupRestore
       BackupMetadata.create!(name: "multisite", value: Rails.configuration.multisite)
     end
 
-    def pause_sidekiq
-      log "Pausing sidekiq..."
-      Sidekiq.pause!
-    end
-
-    def wait_for_sidekiq
-      log "Waiting for sidekiq to finish running jobs..."
-      iterations = 1
-      while sidekiq_has_running_jobs?
-        log "Waiting for sidekiq to finish running jobs... ##{iterations}"
-        sleep 5
-        iterations += 1
-        raise "Sidekiq did not finish running all the jobs in the allowed time!" if iterations > 6
-      end
-    end
-
-    def sidekiq_has_running_jobs?
-      Sidekiq::Workers.new.each do |_, _, worker|
-        payload = worker.try(:payload)
-        return true if payload.try(:all_sites)
-        return true if payload.try(:current_site_id) == @current_db
-      end
-
-      false
-    end
-
     def dump_public_schema
       log "Dumping the public schema of the database..."
 
@@ -403,14 +370,6 @@ module BackupRestore
       log "Something went wrong while removing the following tmp directory: #{@tmp_directory}", ex
     end
 
-    def unpause_sidekiq
-      return unless Sidekiq.paused?
-      log "Unpausing sidekiq..."
-      Sidekiq.unpause!
-    rescue => ex
-      log "Something went wrong while unpausing Sidekiq.", ex
-    end
-
     def mark_backup_as_not_running
       log "Marking backup as finished..."
       BackupRestore.mark_as_not_running!