internal/mcp: remove stale TODOs in mcp.go

Change-Id: Ia91e9e9c0c94a3e0b511fc14b673ff79ac6affad
Reviewed-on: https://go-review.googlesource.com/c/tools/+/682936
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alan Donovan <adonovan@google.com>

Author: findleyr

mcp/mcp.go

@@ -36,17 +36,4 @@
 // hanging GET request, and writes them to a POST endpoint. Users of this SDK
 // may define their own custom Transports by implementing the [Transport]
 // interface.
-//
-// # TODO
-//
-//   - Support all content types.
-//   - Support pagination.
-//   - Support completion.
-//   - Support oauth.
-//   - Support all client/server operations.
-//   - Pass the client connection in the context.
-//   - Support streamable HTTP transport.
-//   - Support multiple versions of the spec.
-//   - Implement full JSON schema support, with both client-side and
-//     server-side validation.
 package mcp