Disable multitasking tray

Hi guys, I have a quick question for everyone, I am looking for a cydia tweak that will allow me to disable the multitasking pop up tray thing that appears when you double tap the home button..I have just purchased imperium which includes it's own multitasking tray so that's why I don't need it anymore..

 

Thanks for the replies but neither of these solve my issue, the thing is that when I have imperium set to open when I double click the home button and it does just that, but I want to double click to close it too but when I double click again it simply opens up the default app switcher, that is why I want to disable it but I don't want to disable multitasking, that's why I can use the springtomise method