fix lint warn -> rm unused import rm (facebook#35186)

Summary:
- Fixed lint warning -> rm unused import `rm` in `scripts/run-ci-e2e-tests.js` file
- Hence, removed unused import `rm` in `scripts/run-ci-e2e-tests.js` file

## Changelog

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[GENERAL] [FIXED] - Fixed lint warning -> rm unused import `rm` in `scripts/run-ci-e2e-tests.js` file

Pull Request resolved: facebook#35186

Test Plan:
`yarn test-ci`
![image](https://user-images.githubusercontent.com/55224033/199700838-c8a6d2d6-0634-4e0a-b50d-5ca89957cf38.png)

Reviewed By: sshic

Differential Revision: D40978104

Pulled By: NickGerleman

fbshipit-source-id: 5a99cd33d25015325133aee1442980b218104e86

Author: Pranav-yadav

scripts/run-ci-e2e-tests.js

@@ -19,7 +19,7 @@
  * --retries [num] - how many times to retry possible flaky commands: yarn add and running tests, default 1
  */
 
-const {cd, cp, echo, exec, exit, mv, rm} = require('shelljs');
+const {cd, cp, echo, exec, exit, mv} = require('shelljs');
 const spawn = require('child_process').spawn;
 const argv = require('yargs').argv;
 const path = require('path');