uploads: stop pruning uploads.

app/jobs/prune_uploads_job.rb

@@ -1,9 +0,0 @@
-# frozen_string_literal: true
-
-# A job that runs hourly to delete all completed, stale, or failed uploads.
-# Spawned by {DanbooruMaintenance}.
-class PruneUploadsJob < ApplicationJob
-  def perform
-    Upload.prune!
-  end
-end

app/logical/danbooru_maintenance.rb

@@ -4,7 +4,6 @@ module DanbooruMaintenance
   module_function
 
   def hourly
-    queue PruneUploadsJob
     queue PrunePostsJob
     queue PruneRateLimitsJob
     queue RegeneratePostCountsJob

app/models/upload.rb

@@ -88,12 +88,6 @@ class Upload < ApplicationRecord
     self.server = Socket.gethostname
   end
 
-  def self.prune!
-    completed.where("created_at < ?", 1.hour.ago).lock.destroy_all
-    preprocessed.where("created_at < ?", 1.day.ago).lock.destroy_all
-    where("created_at < ?", 3.days.ago).lock.destroy_all
-  end
-
   def self.visible(user)
     if user.is_admin?
       all