Remove memory bank from repo (#1510)

- Delete memory-bank/ directory and all its files
- Remove memory bank reference from Agents.md

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: priyanshu92

Agents.md

@@ -1,9 +1,5 @@
 # Agents Instructions
 
-## General Guidelines
-
-Always read memory bank information from [memory-bank/Agents.md](memory-bank/Agents.md)
-
 ## Architecture Overview
 
 This is the **Power Platform VS Code extension** that provides tooling for creating, building, and deploying Power Platform solutions, packages, and portals. It integrates the Power Platform CLI (pac) directly into VS Code.