Remove "non-prod ready" notice for apollo client integration

[louiszawadzki]

What does this PR do?

We're now surfacing the graphql requests information on the frontend, so we can remove this notice in the README.

Additional Notes

This will be propagated to https://www.npmjs.com/package/@datadog/mobile-react-native-apollo-client with the next release.

Review checklist (to be filled by reviewers)

• Feature or bugfix MUST have appropriate tests
• Make sure you discussed the feature or bugfix with the maintaining team in an Issue
• Make sure each commit and the PR mention the Issue number (cf the CONTRIBUTING doc)
• If this PR is auto-generated, please make sure also to manually update the code related to the change

[stevoland]

Hi @louiszawadzki, me again :)

In what way is this to be exposed in the UI? I see the graphql.operationName etc attributes on the resource but nothing built into the UI. Is something being rolled out perhaps?

[louiszawadzki]

Hi @stevoland!
Yes it will be announced and rolled out in the coming days :)