docs: Remove old office hours callout (#7709)

docs/pages/product/getting-started/cloud/query-from-react-app.mdx

@@ -5,14 +5,6 @@ redirect_from:
 
 # Query from a React app
 
-<InfoBox heading="Getting Started with Cube Cloud">
-
-[Join our Cube Cloud Office Hours on August 23rd](https://event.on24.com/wcc/r/4314738/57FE0F7DCCEA887295E4BCD818061E2B?partnerref=docs)
-to jumpstart your Cube Cloud account and gain insights on connecting data
-sources, creating data models, and integrating your data apps.
-
-</InfoBox>
-
 Cube offers both [REST](/product/apis-integrations/rest-api) and
 [GraphQL](/product/apis-integrations/graphql-api) APIs, which can be used to
 query data from applications built in React or other frontend frameworks.