There are uninstall instructions, as noted above, but since I just went through this I'll add a few things I had to figure out in case it helps others:
1) I used a Windows machine (to install and to uninstall; didn't have much luck using another device).
2) Couldn't get Brave to work, but Edge set to defaults worked. Had to disable ad blockers and also the popup blocker setting in Edge.
3) First, enable Developer Options and enabling OEM unlocking within Developer Options. Scroll up the linked page for instructions on these.
4) Then connect the phone, scroll up that web page and hit the blue button to Unlock the Bootloader. (Enabling doesn't actually unlock the bootloiader.) Confirm the action on the device.
5) Now you can go to the link to Google's update tool at the bottom of the linked page.
6) Microsoft will keep restarting the ADB service during the install, causing a failure. You can kill the task through Window's Task Manager, but Windows will restart it before completion and the install will fail when it does. I didn't want to uninstall ADB thinking it might be needed elsewhere. I circumvented this by using Task Manager to find the ADB executable. I temporarily renamed the ADB file so windows couldn't call it up, then used Task Manager to end the process, and that let the install proceed unimpeded.
Hope something herein helps someone navigate this process more easily.