dont reset style exiting gameplaysyncmachine

the reason this was done is never mentioned anywhere and was added over a decade ago and has recently started causing crashes that didnt occur before so im removing it and it doesnt seem to break anything

Author: poco0317

src/Etterna/Screen/Gameplay/ScreenGameplaySyncMachine.cpp

@@ -113,7 +113,6 @@ ScreenGameplaySyncMachine::HandleScreenMessage(const ScreenMessage& SM)
 
 	if (SM == SM_GoToPrevScreen || SM == SM_GoToNextScreen) {
 		GAMESTATE->m_pCurSteps.Set(nullptr);
-		GAMESTATE->SetCurrentStyle(nullptr, PLAYER_INVALID);
 		GAMESTATE->m_pCurSong.Set(nullptr);
 	}
 }