Remove unused dependency

backend/run.js

@@ -4,8 +4,6 @@ const child_process = require('child_process')
 const {promisify} = require('util')
 const execFile = promisify(child_process.execFile)
 
-const YAML = require('yaml')
-
 async function findPluginPath(pluginName) {
 	const rootPluginPath = '/plugins/'+pluginName
 	try {