storage manager: remove S3 backend.

Remove in favor of the rclone S3 backend.

app/logical/storage_manager/s3.rb

@@ -1,47 +0,0 @@
-class StorageManager::S3 < StorageManager
-  # https://docs.aws.amazon.com/sdkforruby/api/Aws/S3/Client.html#initialize-instance_method
-  DEFAULT_S3_OPTIONS = {
-    region: Danbooru.config.aws_region,
-    credentials: Danbooru.config.aws_credentials,
-    logger: Rails.logger,
-  }
-
-  # https://docs.aws.amazon.com/sdkforruby/api/Aws/S3/Client.html#put_object-instance_method
-  DEFAULT_PUT_OPTIONS = {
-    acl: "public-read",
-    storage_class: "STANDARD", # STANDARD, STANDARD_IA, REDUCED_REDUNDANCY
-    cache_control: "public, max-age=#{1.year.to_i}",
-    #content_type: "image/jpeg" # XXX should set content type
-  }
-
-  attr_reader :bucket, :client, :s3_options
-
-  def initialize(bucket, client: nil, s3_options: {}, **options)
-    @bucket = bucket
-    @s3_options = DEFAULT_S3_OPTIONS.merge(s3_options)
-    @client = client || Aws::S3::Client.new(**@s3_options)
-    super(**options)
-  end
-
-  def key(path)
-    path.sub(/^.+?data\//, "")
-  end
-
-  def store(io, path)
-    data = io.read
-    base64_md5 = Digest::MD5.base64digest(data)
-    client.put_object(bucket: bucket, key: key(path), body: data, content_md5: base64_md5, **DEFAULT_PUT_OPTIONS)
-  end
-
-  def delete(path)
-    client.delete_object(bucket: bucket, key: key(path))
-  rescue Aws::S3::Errors::NoSuchKey
-    # ignore
-  end
-
-  def open(path)
-    file = Tempfile.new(binmode: true)
-    client.get_object(bucket: bucket, key: key(path), response_target: file)
-    file
-  end
-end