Removed unused _prefs from ghost and graveyard screens
Removed unused _prefs from app.dart
Added debug code to "use" _ghostReleased in ghost screen
Commented out _cancelTimer in ghost screen
Commented out _hideNotification in app.dart
Removed unused packages from above code
Removed unused _prefs from ghost and graveyard screens Removed unused _prefs from app.dart Added debug code to "use" _ghostReleased in ghost screen Commented out _cancelTimer in ghost screen Commented out _hideNotification in app.dart Removed unused packages from above code