Clean up: remove eslint-disable no-undef in test_js* scripts

Summary: Changelog: [Internal] - Clean up - Remove `eslint-disable no-undef` by not requiring `shelljs/global`

Reviewed By: cortinico

Differential Revision: D33197964

fbshipit-source-id: 2e36fc10bf4e3230b8ae914f48d244446da43973

scripts/run-ci-e2e-tests.js

@@ -18,9 +18,8 @@
  * --skip-cli-install - to skip react-native-cli global installation (for local debugging)
  * --retries [num] - how many times to retry possible flaky commands: yarn add and running tests, default 1
  */
-/*eslint-disable no-undef */
-require('shelljs/global');
 
+const {cd, cp, echo, exec, exit, mv} = require('shelljs');
 const spawn = require('child_process').spawn;
 const argv = require('yargs').argv;
 const path = require('path');
@@ -288,5 +287,3 @@ try {
   }
 }
 exit(exitCode);
-
-/*eslint-enable no-undef */

scripts/run-ci-javascript-tests.js

@@ -16,9 +16,8 @@
  * --jestBinary [path] - path to jest binary, defaults to local node modules
  * --yarnBinary [path] - path to yarn binary, defaults to yarn
  */
-/*eslint-disable no-undef */
-require('shelljs/global');
 
+const {echo, exec, exit} = require('shelljs');
 const argv = require('yargs').argv;
 
 const numberOfMaxWorkers = argv.maxWorkers || 1;
@@ -72,5 +71,3 @@ try {
   echo('Finished.');
 }
 exit(exitCode);
-
-/*eslint-enable no-undef */