refactor: remove feature summary page

This page was to describe the different features available on different networks.
Since the protocol is deployed in its entirety on BSC this page is not necessary.

Author: coreyar

SUMMARY.md

@@ -5,7 +5,6 @@
 * [V4 Overview](README.md)
 * [Contracts Overview](getting-started/contracts-overview.md)
 * [V4 Whitepaper]()
-* [Protocol Features Summary](getting-started/protocol-feature-summary.md)
 
 ## What's New?