Revert "chats: add viewdata"

This reverts commit 8ce99fcd53.

app/src/main/java/com/keylesspalace/tusky/viewdata/ChatViewData.kt

@@ -1,84 +0,0 @@
-package com.keylesspalace.tusky.viewdata
-
-import com.keylesspalace.tusky.entity.*
-import java.util.*
-
-
-abstract class ChatViewData {
-    abstract fun getViewDataId() : Int
-    abstract fun deepEquals(val o: ChatViewData) : Boolean
-
-    class Concrete(val account : Account,
-        val id: String,
-        val unread: Int,
-        val lastMessage: ChatMessageViewData.Concrete?,
-        val updatedAt: Date ) : ChatViewData() {
-        override fun getViewDataId(): Int {
-            return id.hashCode()
-        }
-
-        override fun deepEquals(o: ChatViewData): Boolean {
-            if (o !is Concrete) return false
-            return o.account == account && o.id == id &&
-                    o.unread == unread &&
-                    (lastMessage != null && o.lastMessage?.deepEquals(lastMessage) ?: false) &&
-                    o.updatedAt == updatedAt
-        }
-
-        override fun hashCode(): Int {
-            return Objects.hash(account, id, unread, lastMessage, updatedAt)
-        }
-    }
-
-    class Placeholder(val id: Int, val isLoading: Boolean) : ChatViewData() {
-        override fun getViewDataId(): Int {
-            return id
-        }
-
-        override fun deepEquals(val o: ChatViewData): Boolean {
-            if( o !is Placeholder ) return false
-            return o.isLoading == isLoading && o.id == id
-        }
-    }
-}
-
-abstract class ChatMessageViewData {
-    abstract fun getViewDataId() : Int
-    abstract fun deepEquals(val o: ChatMessageViewData) : Boolean
-
-    class Concrete(val id: String,
-        val content: String,
-        val chatId: String,
-        val accountId: String,
-        val createdAt: Date,
-        val attachment: Attachment?,
-        val emojis: List<Emoji>) : ChatMessageViewData()
-    {
-        override fun getViewDataId(): Int {
-            return id.hashCode()
-        }
-
-        override fun deepEquals(o: ChatMessageViewData): Boolean {
-            if( o !is Concrete ) return false
-
-            return o.id == id && o.content == content && o.chatId == chatId &&
-                    o.accountId == accountId && o.createdAt == createdAt &&
-                    o.attachment == attachment && o.emojis == emojis
-        }
-
-        override fun hashCode() : Int {
-            return Objects.hash(id, content, chatId, accountId, createdAt, attachment)
-        }
-    }
-
-    class Placeholder(val id: Int, private val isLoading: Boolean) : ChatMessageViewData() {
-        override fun getViewDataId(): Int {
-            return id
-        }
-
-        override fun deepEquals(val o: ChatMessageViewData): Boolean {
-            if( o !is Placeholder) return false
-            return o.isLoading == isLoading && o.id == id
-        }
-    }
-}