Merge pull request modelcontextprotocol#636 from modelcontextprotocol/davidsp/remove-update

docs: remove updates.mdx as we don't maintain it well

Author: olaservo

docs/development/updates.mdx

@@ -53,7 +53,6 @@
           {
             "group": "Development",
             "pages": [
-              "development/updates",
               "development/roadmap",
               "development/contributing"
             ]

docs/docs.json

@@ -3,8 +3,6 @@ title: Introduction
 description: 'Get started with the Model Context Protocol (MCP)'
 ---
 
-<Note>C# SDK released! Check out [what else is new.](/development/updates)</Note>
-
 MCP is an open protocol that standardizes how applications provide context to LLMs. Think of MCP like a USB-C port for AI applications. Just as USB-C provides a standardized way to connect your devices to various peripherals and accessories, MCP provides a standardized way to connect AI models to different data sources and tools.
 
 ## Why MCP?