Removed onError (already deprecated)

lib/server.js

@@ -9,6 +9,10 @@ const isStream = require('isstream')
 const DEV = 'development' === process.env.NODE_ENV
 const TESTING = 'test' === process.env.NODE_ENV
 
+const serve = fn => server((req, res) => {
+  run(req, res, fn, sendError)
+})
+
 module.exports = exports = serve
 
 exports.run = run
@@ -17,16 +21,6 @@ exports.send = send
 exports.sendError = sendError
 exports.createError = createError
 
-function serve(fn, {onError = null} = {}) {
-  if (onError) {
-    console.warn('[DEPRECATED] onError is deprecated and will be removed in a future release. Please use your own try/catch as needed.')
-  }
-
-  return server((req, res) => {
-    run(req, res, fn, onError || sendError)
-  })
-}
-
 async function run(req, res, fn, onError) {
   try {
     const val = await fn(req, res)