Hide Filter in Sub category

here is my categories structure
main->sub1->sub2

i created menu of sub1 and selected direct sub elements in Sub elements filter,
it works for sub1 and hide filter,
but when i go inside sub2 , which actually includes products, filter comes again
I don't know why a simple thing is developed too complex, this should be very simple asking to show filter in menu or not, but it is not,
can anyone help regaring this?

Hello,

Please provide your relative elements settings via screenshots.
Take a good care to show us everything in order to check your configuration.
Regards