Remove remaining undocumented structs and fields (bwmarrin#1225)

* feat(events)!: drop undocumented structs and fields

* feat(structs)!: drop undocumented structs and fields

* fix(eventhandlers): regenerate event handling code

* fix(Ready): add PrivateChannels back

Author: FedorLap2006

eventhandlers.go

@@ -36,19 +36,13 @@ type Event struct {
 
 // A Ready stores all data for the websocket READY event.
 type Ready struct {
-	Version         int          `json:"v"`
-	SessionID       string       `json:"session_id"`
-	User            *User        `json:"user"`
-	ReadState       []*ReadState `json:"read_state"`
-	PrivateChannels []*Channel   `json:"private_channels"`
-	Guilds          []*Guild     `json:"guilds"`
+	Version         int        `json:"v"`
+	SessionID       string     `json:"session_id"`
+	User            *User      `json:"user"`
+	Guilds          []*Guild   `json:"guilds"`
+	PrivateChannels []*Channel `json:"private_channels"`
 
-	// Undocumented fields
-	Settings          *Settings            `json:"user_settings"`
-	UserGuildSettings []*UserGuildSettings `json:"user_guild_settings"`
-	Relationships     []*Relationship      `json:"relationships"`
-	Presences         []*Presence          `json:"presences"`
-	Notes             map[string]string    `json:"notes"`
+	// TODO: Application and Shard
 }
 
 // ChannelCreate is the data for a ChannelCreate event.
@@ -245,12 +239,6 @@ type GuildScheduledEventUserRemove struct {
 	GuildID               string `json:"guild_id"`
 }
 
-// MessageAck is the data for a MessageAck event.
-type MessageAck struct {
-	MessageID string `json:"message_id"`
-	ChannelID string `json:"channel_id"`
-}
-
 // MessageCreate is the data for a MessageCreate event.
 type MessageCreate struct {
 	*Message
@@ -314,16 +302,6 @@ type Resumed struct {
 	Trace []string `json:"_trace"`
 }
 
-// RelationshipAdd is the data for a RelationshipAdd event.
-type RelationshipAdd struct {
-	*Relationship
-}
-
-// RelationshipRemove is the data for a RelationshipRemove event.
-type RelationshipRemove struct {
-	*Relationship
-}
-
 // TypingStart is the data for a TypingStart event.
 type TypingStart struct {
 	UserID    string `json:"user_id"`
@@ -337,20 +315,6 @@ type UserUpdate struct {
 	*User
 }
 
-// UserSettingsUpdate is the data for a UserSettingsUpdate event.
-type UserSettingsUpdate map[string]interface{}
-
-// UserGuildSettingsUpdate is the data for a UserGuildSettingsUpdate event.
-type UserGuildSettingsUpdate struct {
-	*UserGuildSettings
-}
-
-// UserNoteUpdate is the data for a UserNoteUpdate event.
-type UserNoteUpdate struct {
-	ID   string `json:"id"`
-	Note string `json:"note"`
-}
-
 // VoiceServerUpdate is the data for a VoiceServerUpdate event.
 type VoiceServerUpdate struct {
 	Token    string `json:"token"`