refactor: removed SparkyTurboChargeActivated event (#401)

lib/game/bloc/game_bloc.dart

@@ -12,7 +12,6 @@ class GameBloc extends Bloc<GameEvent, GameState> {
     on<Scored>(_onScored);
     on<MultiplierIncreased>(_onIncreasedMultiplier);
     on<BonusActivated>(_onBonusActivated);
-    on<SparkyTurboChargeActivated>(_onSparkyTurboChargeActivated);
     on<GameOver>(_onGameOver);
     on<GameStarted>(_onGameStarted);
   }
@@ -65,18 +64,4 @@ class GameBloc extends Bloc<GameEvent, GameState> {
       ),
     );
   }
-
-  Future<void> _onSparkyTurboChargeActivated(
-    SparkyTurboChargeActivated event,
-    Emitter emit,
-  ) async {
-    emit(
-      state.copyWith(
-        bonusHistory: [
-          ...state.bonusHistory,
-          GameBonus.sparkyTurboCharge,
-        ],
-      ),
-    );
-  }
 }

lib/game/bloc/game_event.dart

@@ -40,13 +40,6 @@ class BonusActivated extends GameEvent {
   List<Object?> get props => [bonus];
 }
 
-class SparkyTurboChargeActivated extends GameEvent {
-  const SparkyTurboChargeActivated();
-
-  @override
-  List<Object?> get props => [];
-}
-
 /// {@template multiplier_increased_game_event}
 /// Added when a multiplier is gained.
 /// {@endtemplate}

test/game/bloc/game_bloc_test.dart

@@ -279,21 +279,5 @@ void main() {
         );
       },
     );
-
-    group('SparkyTurboChargeActivated', () {
-      blocTest<GameBloc, GameState>(
-        'adds game bonus',
-        build: GameBloc.new,
-        act: (bloc) => bloc..add(const SparkyTurboChargeActivated()),
-        expect: () => [
-          isA<GameState>()
-            ..having(
-              (state) => state.bonusHistory,
-              'bonusHistory',
-              [GameBonus.sparkyTurboCharge],
-            ),
-        ],
-      );
-    });
   });
 }

test/game/bloc/game_event_test.dart

@@ -97,17 +97,4 @@ void main() {
       );
     });
   });
-
-  group('SparkyTurboChargeActivated', () {
-    test('can be instantiated', () {
-      expect(const SparkyTurboChargeActivated(), isNotNull);
-    });
-
-    test('supports value equality', () {
-      expect(
-        SparkyTurboChargeActivated(),
-        equals(SparkyTurboChargeActivated()),
-      );
-    });
-  });
 }