fix(tests): remove delay

To speed up tests, remove the delay between test cases.

tests/avaPlugin.spec.js

@@ -56,11 +56,7 @@ test.afterEach(async t => {
   await rimraf(t.context.path)
 })
 
-let count = 1
-
 async function plugin (t, input = {}) {
-  // Adding a sleep to avoid too much stress without running tests serially
-  await sleep(2000 * count++)
   const { plugins = {}, invokeOpts = [] } = input
   const project = await create(t.context.project, {
     plugins
@@ -72,10 +68,6 @@ async function plugin (t, input = {}) {
   t.pass()
 }
 
-async function sleep (ms) {
-  return new Promise(resolve => setTimeout(resolve, ms))
-}
-
 for (const avaConfigLocation of ['ava.config.js', 'package.json']) {
   // Plain JS setup - not tested since the default app created by @vue/cli is
   // uses export default {} in its HelloWorld.vue compoenent.