How to remove items using KubeJS

I was trying to remove items from creative menu by following this guide but it does not work
https://kubejs.com/wiki/events/StartupEvents/modifyCreativeTab

StartupEvents.modifyCreativeTab('minecraft:redstone_blocks', event => {
// Adds example item after redstone
event.addAfter('minecraft:redstone', 'minecraft:podzol')
// Removes redstone
event.removeDisplay('minecraft:redstone');
})

and as expected the code only adds podzol block to redstone_blocks tab and does not remove redstone