Ios: Use setup functions for a few factories

Change-Id: Ide05c2ca859454c1745e5c243af6a3d05131194c
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/plugins/ios/iosrunconfiguration.h

@@ -81,10 +81,6 @@ private:
     IosDeviceTypeAspect iosDeviceType;
 };
 
-class IosRunConfigurationFactory : public ProjectExplorer::RunConfigurationFactory
-{
-public:
-    IosRunConfigurationFactory();
-};
+void setupIosRunConfiguration();
 
 } // Ios::Internal