882752: Removed the collaborative editing topic from our UG documentation.

Author: JanakiramanSakthivel

ej2-asp-core-mvc/code-snippet/spreadsheet/collaborative-editing/collaborativeController.cs

@@ -2458,11 +2458,6 @@
 		<li><a href="/ej2-asp-core/spreadsheet/context-menu">Context Menu</a></li>
 		<li><a href="/ej2-asp-core/spreadsheet/template">Templates</a></li>
 		<li><a href="/ej2-asp-core/spreadsheet/global-local">Globalization</a></li>
-		<li>Use Cases
-		<ul>
-		<li><a href="/ej2-asp-core/spreadsheet/use-cases/collaborative-editing">Collaborative Editing</a></li>
-		</ul>
-		</li>
 		<li>How To
 		<ul>
 		<li><a href="/ej2-asp-core/spreadsheet/how-to/sort-a-range-by-custom-list">Sort a range by custom list</a></li>