Merge pull request #4783 from syncfusion-content/ej2-904018-listboxfix

904018: Remove checkbox form single and multiple selection listbox sample

Author: Satheeskumar-1989

blazor/listbox/selection.md

@@ -23,7 +23,7 @@ To enable single selection in the ListBox, [Mode](https://help.syncfusion.com/cr
 
 <SfListBox TValue="string[]" DataSource="@Vehicles" TItem="VehicleData">
     <ListBoxFieldSettings Text="Text" Value="Id" />
-    <ListBoxSelectionSettings ShowCheckbox="true" Mode="Syncfusion.Blazor.DropDowns.SelectionMode.Single"></ListBoxSelectionSettings>
+    <ListBoxSelectionSettings Mode="Syncfusion.Blazor.DropDowns.SelectionMode.Single"></ListBoxSelectionSettings>
 </SfListBox>
 
 @code {
@@ -58,7 +58,7 @@ N> By default, the selection mode is set as `Multiple`.
 @using Syncfusion.Blazor.DropDowns
 
 <SfListBox TValue="string[]" DataSource="@Vehicles" TItem="VehicleData">
-    <ListBoxSelectionSettings ShowCheckbox="true" Mode="Syncfusion.Blazor.DropDowns.SelectionMode.Multiple"></ListBoxSelectionSettings>
+    <ListBoxSelectionSettings Mode="Syncfusion.Blazor.DropDowns.SelectionMode.Multiple"></ListBoxSelectionSettings>
     <ListBoxFieldSettings Text="Text" Value="Id" />
 </SfListBox>