If you want to remove the application from your device when upgrading to the stable version, here is a step-by-step guide to doing so.
Step 1: Open the “Settings” app on your device and from the list of setting options, select the “General” option.
Step 2: Now, in the “General” section, select the “Profiles” option.
Step 3: At the bottom of the screen, click on the “Remove Profile” button.
Step 4: You may not be prompted to enter the passcode. Follow the process and then tap on the “Remove” button.
That’s it. You can now restart your device. Removing the profile from your iOS device will also remove the Feedback Assistant app from the device.