[Selection Example] Extra empty space after item deletion

[vchimev]

Platform: iOS Version: nativescript-telerik-ui-pro@1.5.1 Example: https://github.com/NativeScript/nativescript-marketplace-demo/tree/master/app/examples/listview/selection

Steps:

• open Selection example
• delete the first item

Result:

[vchimev]

There is a problem on Android as well which is randomly reproducible:

[NickIliev]

CLosing this issue as it is no longer reproducible with the latest nativescript-ui-listivew