remove region unsupported message for Sendgrid and Mandrill (#3482)

Co-authored-by: Emily Jia <[email protected]>

Author: emilyyjia

src/connections/sources/catalog/cloud-apps/mandrill/index.md

@@ -2,7 +2,6 @@
 title: Mandrill Source
 id: asdf76as89
 ---
-{% include content/source-region-unsupported.md %}
 
 [Mandrill](http://www.mandrill.com/) is a transactional email API for MailChimp users.
 

src/connections/sources/catalog/cloud-apps/sendgrid/index.md

@@ -2,7 +2,6 @@
 title: SendGrid Source
 id: jhr8dT2yHn
 ---
-{% include content/source-region-unsupported.md %}
 
 [SendGrid](http://sendgrid.com) is a trusted platform for transactional email and email marketing.