chore: Remove duplicate hiring message from README (#7535)

Author: AbhiPrasad

README.md

@@ -18,15 +18,6 @@ faster, so we can get back to enjoying technology. If you want to join us
 This is the next line of Sentry JavaScript SDKs, comprised in the `@sentry/` namespace. It will provide a more
 convenient interface and improved consistency between various JavaScript environments.
 
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-**Sentry is Hiring!!!**
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-Would you like to work on Open Source software and help maintain this repository? Apply today:
-https://boards.greenhouse.io/sentry.
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 ## Links
 
 - [![Documentation](https://img.shields.io/badge/documentation-sentry.io-green.svg)](https://docs.sentry.io/quickstart/)