Removed unused files, code cleanup

lib/features/tasks/cubit/tasks_cubit.dart

@@ -1,8 +0,0 @@
-import 'package:bloc/bloc.dart';
-import 'package:equatable/equatable.dart';
-
-part 'tasks_state.dart';
-
-class TasksCubit extends Cubit<TasksState> {
-  TasksCubit() : super(TasksInitial());
-}

lib/features/tasks/cubit/tasks_state.dart

@@ -1,10 +0,0 @@
-part of 'tasks_cubit.dart';
-
-abstract class TasksState extends Equatable {
-  const TasksState();
-
-  @override
-  List<Object> get props => [];
-}
-
-class TasksInitial extends TasksState {}