Remove AI ms.collection tag

Author: anandmeg

hub/powertoys/install.md

@@ -1,7 +1,6 @@
 ---
 title: Install PowerToys
 description: Install PowerToys, a set of utilities for customizing Windows, using an executable file or package manager (WinGet, Chocolatey, Scoop).
-ms.collection: ce-skilling-ai-copilot
 ms.custom: copilot-scenario-highlight
 ms.date: 02/26/2025
 ms.topic: quickstart