remove countdownRemaining from ScheduleLoaded state (#330)

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## Description
remove countdownRemaining from ScheduleLoaded state
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## Type of Change

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- [ ] ✨ New feature (non-breaking change which adds functionality)
- [x] 🛠️ Bug fix (non-breaking change which fixes an issue)
- [ ] ❌ Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] 🧹 Code refactor
- [ ] ✅ Build configuration change
- [ ] 📝 Documentation
- [ ] 🗑️ Chore

lib/pages/device_managment/schedule_device/bloc/schedule_bloc.dart

@@ -232,7 +232,6 @@ class ScheduleBloc extends Bloc<ScheduleEvent, ScheduleState> {
           selectedDays: List.filled(7, false),
           functionOn: false,
           isEditing: false,
-          countdownRemaining: Duration.zero,
         ));
       } else {
         emit(ScheduleLoaded(