docs: Remove announcements (the job posting is filled?) (#385)

I happened to click on the link, and I guess this posting is from 5 months ago 😄

README.md

@@ -35,12 +35,6 @@ We appreciate your continued support, thank you!
 * [About](#about)
 * [License](#license)
 
-<a name="announcements"></a>
-# Announcements
-
-**NEW:** If you're a software engineer who is passionate about #DeveloperExperience and/or #OpenSource, [this is an incredible opportunity to join our #DX team](https://sendgrid.com/careers/role/1421152/?gh_jid=1421152) as a Developer Experience Engineer and work with [@thinkingserious](https://github.com/thinkingserious) and [@aroach](https://github.com/aroach)! Tell your friends :)
-
-
 <a name="installation"></a>
 # Installation