Only a Group Admin can remove you as a Moderator. If you're a Group admin, simply:
- Open the Insight Timer app on your device.
- Tap the menu icon (☰) in the top-left corner.
- Scroll down and select "Groups".
- Select the Group.
- Tap Settings at the top right corner of the page.
- Scroll down and select the profile.
- Click Remove Moderator.