Sadly, this is almost certainly an issue you'll need to take up with your virus scanner vendor. It looks like they're flagging this in error.
As an alternative, you can download our standalone uninstaller, here:
Uninstall Flash Player - Windows:
https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-windows.html
Uninstall Flash Player - Mac:
https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html
On Ubunut and Mint (assuming you installed using apt):
sudo apt remove adobe-flashplugin flashplugin-installer