I can't disable splashscreen in my apps!

Hello!
I have deleted following lines in my config.xml

  <preference name="SplashScreen" value="none"/>
  <preference name="SplashScreenDelay" value="3000"/>

And I have removed also the ngCordova splashscreen plugin, and rebuilded all

ionic platform remove ios &&  ionic platform add ios && ionic build ios

But when the app starts, it still showing the splashscreen.
(I have deleted the png from resources).
What can I do?
Thanks!