Update Start menu settings and remove unused file

windows/configuration/start/includes/hide-app-list.md

@@ -0,0 +1,20 @@
+---
+author: paolomatarazzo
+ms.author: paoloma
+ms.date: 03/18/2024
+ms.topic: include
+---
+
+### Hide app list
+
+If you enable this setting, the Start Menu will either collapse or remove the all apps list from the Start menu:
+
+- **Collapse** doesn't display the app list next to the pinned tiles in Start. An **All apps** button is displayed on Start to open the all apps list. This is equivalent to setting the **Show app list in Start** in Settings to **Off**
+- **Collapse and disable setting** is the same as the collapse option and disable the **Show app list in Start menu** in Settings, so users can't turn it to On
+- **Remove and disable setting** removes the all apps list from Start and disable the **Show app list in Start menu** in Settings, so users can't turn it to On
+- If you disable or don't configure this setting, the all apps list is visible by default, and the user can change **Show app list in Start** in Settings
+
+|  | Path |
+|--|--|
+| **CSP** | `./Device/Vendor/MSFT/Policy/Config/Start/`[HideAppList](/windows/client-management/mdm/policy-csp-start#hideapplist)<br><br>`./User/Vendor/MSFT/Policy/Config/Start/`[HideAppList](/windows/client-management/mdm/policy-csp-start#hideapplist) |
+| **GPO** | **Computer Configuration** > **Administrative Templates** > **Start Menu and Taskbar** > **Remove All Programs list from the Start menu**<br><br> **User Configuration** > **Administrative Templates** > **Start Menu and Taskbar** > **Remove All Programs list from the Start menu** |