refactor(friend): Remove obsolete code from Friend class

src/friend.cpp

@@ -39,8 +39,6 @@ Friend::Friend(uint32_t friendId, const ToxPk& friendPk)
         userName = friendPk.toString();
     }
 
-    userAlias = Settings::getInstance().getFriendAlias(friendPk);
-
     chatForm = new ChatForm(this);
 }
 

src/friend.h

@@ -77,7 +77,6 @@ private:
     bool hasNewEvents;
     Status friendStatus;
 
-    FriendWidget* widget;
     ChatForm* chatForm;
 };