Remove broken todo link in readme (resolves #4864)

License: MIT
Signed-off-by: Steve Recio <srecio@cs.stanford.edu>

README.md

@@ -41,7 +41,6 @@ Please put all issues regarding the Go IPFS _implementation_ in [this repo](http
   - [Some things to try](#some-things-to-try)
   - [Docker usage](#docker-usage)
   - [Troubleshooting](#troubleshooting-1)
-- [Todo](#todo)
 - [Contributing](#contributing)
   - [Want to hack on IPFS?](#want-to-hack-on-ipfs)
   - [Want to read our code?](#want-to-read-our-code)