Finish to fix notices

lib/models/custom_emoji.dart

@@ -1,5 +1,3 @@
-
-
 /// Single custom emoji information
 ///
 /// @author Pierre Hubert
@@ -15,10 +13,7 @@ class CustomEmoji {
     required int this.userID,
     required String this.shortcut,
     required String this.url,
-  })  : assert(id != null),
-        assert(userID != null),
-        assert(shortcut != null),
-        assert(url != null);
+  });
 
   Map<String, dynamic> toMap() => {
         "id": id,

lib/models/forez_presence.dart

@@ -1,5 +1,3 @@
-
-
 /// Single presence information
 ///
 /// @author Pierre Hubert
@@ -15,15 +13,10 @@ class Presence {
     required this.year,
     required this.month,
     required this.day,
-  })  : assert(userID != null),
-        assert(year != null),
-        assert(month != null),
-        assert(day != null);
+  });
 
   Presence.fromDateTime(DateTime dt, this.userID)
-      : assert(dt != null),
-        year = dt.year,
+      : year = dt.year,
         month = dt.month,
-        day = dt.day,
-        assert(userID != null);
+        day = dt.day;
 }

lib/models/friend.dart

@@ -18,12 +18,7 @@ class Friend extends CacheModel implements Comparable<Friend> {
     required int this.lastActive,
     required this.following,
     required this.canPostTexts,
-  })  : assert(id != null),
-        assert(accepted != null),
-        assert(lastActive != null),
-        assert(following != null),
-        assert(canPostTexts != null),
-        super(id: id);
+  }) : super(id: id);
 
   /// Check out whether friend is connected or not
   bool get isConnected => time() - 30 < lastActive!;
@@ -41,8 +36,7 @@ class Friend extends CacheModel implements Comparable<Friend> {
       };
 
   Friend.fromMap(Map<String, dynamic> map)
-      : assert(map != null),
-        accepted = map[FriendsListTableContract.C_ACCEPTED] == 1,
+      : accepted = map[FriendsListTableContract.C_ACCEPTED] == 1,
         lastActive = map[FriendsListTableContract.C_LAST_ACTIVE],
         following = map[FriendsListTableContract.C_FOLLOWING] == 1,
         canPostTexts = map[FriendsListTableContract.C_CAN_POST_TEXTS] == 1,

lib/models/new_conversation_message.dart

@@ -17,8 +17,7 @@ class NewConversationMessage {
     required this.message,
     this.file,
     this.thumbnail,
-  })  : assert(conversationID != null),
-        assert(file != null || message != null);
+  }) : assert(file != null || message != null);
 
   bool get hasMessage => message != null;