chore: remove Roadmap file (#2954)

README.md

@@ -15,7 +15,6 @@
 
 # Table of Contents <!-- omit in toc -->
 - [Background](#background)
-- [Roadmap](#roadmap)
 - [Usage](#usage)
   - [Examples](#examples)
   - [Dashboards](#dashboards)
@@ -36,11 +35,6 @@ To learn more, check out the following resources:
 - [**js-libp2p implementation**](https://github.com/libp2p/js-libp2p)
 - [**rust-libp2p implementation**](https://github.com/libp2p/rust-libp2p)
 
-# Roadmap
-
-Our roadmap for go-libp2p can be found here: https://github.com/libp2p/go-libp2p/blob/master/ROADMAP.md
-This document represents current projects the go-libp2p team is focused on and provides an estimation of completion targets. It is a complementary roadmap to the overarching libp2p project roadmap: https://github.com/libp2p/specs/blob/master/ROADMAP.md
-
 # Usage
 
 This repository (`go-libp2p`) serves as the entrypoint to the universe of packages that compose the Go implementation of the libp2p stack.