Remove rogue curly brace in Nano 33 BLE Sense Rev2 IMU accelerator tutorial

[mzen228]

What This PR Changes

• The final code sample for the IMU accelerator tutorial for the Arduino Nano 33 BLE Sense Rev2 has an extra curly brace that will cause an error if compiled. These changes remove the rogue curly.

Contribution Guidelines

• I confirm that I have read the contribution guidelines and comply with them.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Matthew seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}