Missing File captchaValidation.js

TYPO3 Version: 13.4.26
EXT Version: 13.1.0

In ext_typoscript_setup.typoscript is the line 
`page.includeJSFooter.powermailrecaptcha = EXT:powermailrecaptcha/Resources/Public/JavaScript/captchaValidation.js`

But this file does not exist?
Is it needed or can we just clear `page.includeJSFooter.powermailrecaptcha` in TS ?