Remove unused variable from README example

[prism4time]

No description provided.

[ghost]

It looks like @qzyse2017 hasn't signed our Contributor License Agreement, yet.

The purpose of a CLA is to ensure that the guardian of a project's outputs has the necessary ownership or grants of rights over all contributions to allow them to distribute under the chosen licence.
Wikipedia

You can read and sign our full Contributor License Agreement here.

Once you've signed reply with [clabot:check] to prove it.

Appreciation of efforts,

clabot

[prism4time]

[clabot:check]

[ghost]

@confluentinc It looks like @qzyse2017 just signed our Contributor License Agreement. 👍

Always at your service,

clabot

[rnpridgeon]

Thanks, alternatively we could add some trivial exception handling in the example if you are feeling up to it :)