To uninstall just one app on HTC 10, you just need to drag and drop it to the uninstall button. But for multiple apps at once and uninstall apps on HTC 10 in batch, you need to do as follows:
1. On the App Drawer, find the Boost+ app and open it
2. Touch the Manage Apps button
3. Now, under the Apps tab, you should see the list of installed apps which can be uninstalled
4. Mark the applications you want to uninstall and then hit the Trash Bin icon
5. Now you need to confirm the uninstall process for each app separately.