Revert "Audit uses of IsRunning and GetState"

This reverts commit 72cf2bdb87.

SYSCONF settings are getting cleared when they shouldn't be. Let's
revert the change until I get proper time to figure out why it's broken.

Source/Core/DolphinQt/MenuBar.h

@@ -43,7 +43,7 @@ public:
 
   explicit MenuBar(QWidget* parent = nullptr);
 
-  void UpdateToolsMenu(Core::State state);
+  void UpdateToolsMenu(bool emulation_started);
 
   QMenu* GetListColumnsMenu() const { return m_cols_menu; }