chore: remove wdio v5 leftover (#3587)

Author: kobenguyent

lib/plugin/wdio.js

@@ -1,6 +1,4 @@
 const debug = require('debug')('codeceptjs:plugin:wdio');
-const path = require('path');
-const fs = require('fs');
 
 const container = require('../container');
 const mainConfig = require('../config');
@@ -100,21 +98,15 @@ module.exports = (config) => {
   const launchers = [];
 
   for (const name of config.services) {
-    // webdriverio v5 style
     const Service = safeRequire(`@wdio/${name.toLowerCase()}-service`);
     if (Service) {
       if (Service.launcher && typeof Service.launcher === 'function') {
         const Launcher = Service.launcher;
 
-        const version = JSON.parse(fs.readFileSync(path.join(require.resolve('webdriverio'), '/../../', 'package.json')).toString()).version;
-        if (version.indexOf('5') === 0) {
-          launchers.push(new Launcher(config));
-        } else {
-          const options = {
-            logPath: global.output_dir, installArgs: seleniumInstallArgs, args: seleniumArgs, ...wdioOptions,
-          };
-          launchers.push(new Launcher(options, [config.capabilities], config));
-        }
+        const options = {
+          logPath: global.output_dir, installArgs: seleniumInstallArgs, args: seleniumArgs, ...wdioOptions,
+        };
+        launchers.push(new Launcher(options, [config.capabilities], config));
       }
       if (typeof Service === 'function') {
         services.push(new Service(config, config.capabilities));