Update README.md (#512)

Author: kamiyaa

README.md

@@ -2,10 +2,6 @@
 
 [![MacOS build](https://github.com/kamiyaa/joshuto/actions/workflows/rust-macos-main.yml/badge.svg)](https://github.com/kamiyaa/joshuto/actions/workflows/rust-macos-main.yml?branch=main)
 
-<a href="https://discord.gg/2spSCCca4Q" target="_blank">
-  <img src="https://discordapp.com/api/guilds/1146271335803277394/widget.png?style=shield">
-</a>
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 # joshuto
 
 [ranger](https://github.com/ranger/ranger)-like terminal file manager written in Rust.