You need to patch the Battle.net desktop app in order to uninstall.

How to resolve issues with slow patch downloads

Information on error BLZBNTBTS0000000D

Standalone patches are downloaded outside of the game launcher or the Blizzard Battle.net desktop app.

Problems with patching may be resolved by disabling the read-only setting on system folders.

Battle.net desktop app information

This error usually happens when our patch servers are down, but could be caused by local network issues as well.

Troubleshooting being unable to install or patch a Blizzard game being accessed through Game Pass

The version of the game you are attempting to play does not match our current game servers.

This error means the Battle.net Agent (the process that installs and patches our games) couldn't stream necessary files.