Remove unneeded check in item-list template
Remove unneeded check in item-list template

If the `isHiddenInList` property is changed to true (e.g. via a
computed property), then that view is removed, and its computed
properties are unhooks — so the `isHiddenInList` property won’t update
and the view can’t be shown again. Items should be hidden via CSS
instead.

huytd/core,kidaa/core,malayladu/core,billmn/core,falconchen/core,Albert221/core,dungphanxuan/core,huytd/core,dungphanxuan/core,utkarshx/core,zaksoup/core,jubianchi/core,flarum/core,jubianchi/core,flarum/core,billmn/core,kirkbushell/core,flarum/core,vuthaihoc/core,renyuneyun/core,Onyx47/core,kidaa/core,Albert221/core,kirkbushell/core,malayladu/core,Onyx47/core,kirkbushell/core,datitisev/core,billmn/core,malayladu/core,vuthaihoc/core,liukaijv/core,liukaijv/core,zaksoup/core,Albert221/core,renyuneyun/core,falconchen/core,Luceos/core,renyuneyun/core,vuthaihoc/core,Luceos/core,datitisev/core,renyuneyun/core,dungphanxuan/core,Luceos/core,kirkbushell/core,utkarshx/core,kidaa/core,malayladu/core,datitisev/core,Albert221/core,falconchen/core,datitisev/core,Luceos/core,zaksoup/core,Onyx47/core