Remove sendmmsg (404 not found)

README.md

@@ -1154,7 +1154,6 @@ See also [Are we game yet?](http://arewegameyet.com)
 * JSON-RPC
   * [vlopes11/futures-jsonrpc](https://github.com/vlopes11/futures-jsonrpc) [[futures-jsonrpc](https://crates.io/crates/futures-jsonrpc)] — Futures implementation for JSON-RPC [<img src="https://api.travis-ci.org/vlopes11/futures-jsonrpc.svg?branch=master">](https://travis-ci.org/vlopes11/futures-jsonrpc)
 * Low level
-  * [Gymmasssorla/sendmmsg](https://github.com/Gymmasssorla/sendmmsg) — Transmit multiple messages using one system call in Rust [<img src="https://api.travis-ci.com/Gymmasssorla/sendmmsg.svg?branch=master">](https://travis-ci.com/Gymmasssorla/sendmmsg)
   * [libpnet/libpnet](https://github.com/libpnet/libpnet) — A cross-platform, low level networking [<img src="https://api.travis-ci.org/libpnet/libpnet.svg?branch=master">](https://travis-ci.org/libpnet/libpnet)
   * [tokio-rs/tokio](https://github.com/tokio-rs/tokio) — A network application framework for rapid development and highly scalable production deployments of clients and servers.
   * [dylanmckay/protocol](https://github.com/dylanmckay/protocol) — Custom TCP/UDP protocol definitions