Remove unused E2EE messaging code (#31193)

app/serializers/activitypub/activity_serializer.rb

@@ -5,8 +5,6 @@ class ActivityPub::ActivitySerializer < ActivityPub::Serializer
     case model.class.name
     when 'Status'
       ActivityPub::NoteSerializer
-    when 'DeliverToDeviceService::EncryptedMessage'
-      ActivityPub::EncryptedMessageSerializer
     else
       super
     end

app/serializers/activitypub/actor_serializer.rb

@@ -7,7 +7,7 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
   context :security
 
   context_extensions :manually_approves_followers, :featured, :also_known_as,
-                     :moved_to, :property_value, :discoverable, :olm, :suspended,
+                     :moved_to, :property_value, :discoverable, :suspended,
                      :memorial, :indexable, :attribution_domains
 
   attributes :id, :type, :following, :followers,
@@ -21,7 +21,6 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
   has_many :virtual_tags, key: :tag
   has_many :virtual_attachments, key: :attachment
 
-  attribute :devices, unless: :instance_actor?
   attribute :moved_to, if: :moved?
   attribute :also_known_as, if: :also_known_as?
   attribute :suspended, if: :suspended?
@@ -72,10 +71,6 @@ class ActivityPub::ActorSerializer < ActivityPub::Serializer
     object.instance_actor? ? instance_actor_inbox_url : account_inbox_url(object)
   end
 
-  def devices
-    account_collection_url(object, :devices)
-  end
-
   def outbox
     object.instance_actor? ? instance_actor_outbox_url : account_outbox_url(object)
   end

app/serializers/activitypub/collection_serializer.rb

@@ -14,8 +14,6 @@ class ActivityPub::CollectionSerializer < ActivityPub::Serializer
     case model.class.name
     when 'Status'
       ActivityPub::NoteSerializer
-    when 'Device'
-      ActivityPub::DeviceSerializer
     when 'FeaturedTag'
       ActivityPub::HashtagSerializer
     when 'ActivityPub::CollectionPresenter'

app/serializers/activitypub/device_serializer.rb

@@ -1,52 +0,0 @@
-# frozen_string_literal: true
-
-class ActivityPub::DeviceSerializer < ActivityPub::Serializer
-  context_extensions :olm
-
-  include RoutingHelper
-
-  class FingerprintKeySerializer < ActivityPub::Serializer
-    attributes :type, :public_key_base64
-
-    def type
-      'Ed25519Key'
-    end
-
-    def public_key_base64
-      object.fingerprint_key
-    end
-  end
-
-  class IdentityKeySerializer < ActivityPub::Serializer
-    attributes :type, :public_key_base64
-
-    def type
-      'Curve25519Key'
-    end
-
-    def public_key_base64
-      object.identity_key
-    end
-  end
-
-  attributes :device_id, :type, :name, :claim
-
-  has_one :fingerprint_key, serializer: FingerprintKeySerializer
-  has_one :identity_key, serializer: IdentityKeySerializer
-
-  def type
-    'Device'
-  end
-
-  def claim
-    account_claim_url(object.account, id: object.device_id)
-  end
-
-  def fingerprint_key
-    object
-  end
-
-  def identity_key
-    object
-  end
-end

app/serializers/activitypub/encrypted_message_serializer.rb

@@ -1,61 +0,0 @@
-# frozen_string_literal: true
-
-class ActivityPub::EncryptedMessageSerializer < ActivityPub::Serializer
-  context :security
-
-  context_extensions :olm
-
-  class DeviceSerializer < ActivityPub::Serializer
-    attributes :type, :device_id
-
-    def type
-      'Device'
-    end
-
-    def device_id
-      object
-    end
-  end
-
-  class DigestSerializer < ActivityPub::Serializer
-    attributes :type, :digest_algorithm, :digest_value
-
-    def type
-      'Digest'
-    end
-
-    def digest_algorithm
-      'http://www.w3.org/2000/09/xmldsig#hmac-sha256'
-    end
-
-    def digest_value
-      object
-    end
-  end
-
-  attributes :type, :message_type, :cipher_text, :message_franking
-
-  has_one :attributed_to, serializer: DeviceSerializer
-  has_one :to, serializer: DeviceSerializer
-  has_one :digest, serializer: DigestSerializer
-
-  def type
-    'EncryptedMessage'
-  end
-
-  def attributed_to
-    object.source_device.device_id
-  end
-
-  def to
-    object.target_device_id
-  end
-
-  def message_type
-    object.type
-  end
-
-  def cipher_text
-    object.body
-  end
-end

app/serializers/activitypub/one_time_key_serializer.rb

@@ -1,35 +0,0 @@
-# frozen_string_literal: true
-
-class ActivityPub::OneTimeKeySerializer < ActivityPub::Serializer
-  context :security
-
-  context_extensions :olm
-
-  class SignatureSerializer < ActivityPub::Serializer
-    attributes :type, :signature_value
-
-    def type
-      'Ed25519Signature'
-    end
-
-    def signature_value
-      object.signature
-    end
-  end
-
-  attributes :key_id, :type, :public_key_base64
-
-  has_one :signature, serializer: SignatureSerializer
-
-  def type
-    'Curve25519Key'
-  end
-
-  def public_key_base64
-    object.key
-  end
-
-  def signature
-    object
-  end
-end