我的收藏夹列表中显示 openboard，我想卸载它。我尝试了以下操作：
$ sudo apt remove openboard
[sudo] password for user1:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'openboard' is not installed, so not removed
0 to upgrade, 0 to newly install, 0 to remove and 10 not to upgrade.
和
$ sudo apt purge openboard
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'openboard' is not installed, so not removed
0 to upgrade, 0 to newly install, 0 to remove and 10 not to upgrade.
但该软件仍然在收藏夹中，我仍然可以运行它。
当我运行该软件时，我可以看到它正在运行，如下所示：
$ ps -aux | grep "openb*"
user1 9615 0.4 0.0 3620 1128 ? S 22:14 0:00 bwrap --args 37 openboard
user1 9626 0.2 0.0 3704 1436 ? S 22:14 0:00 bwrap --args 37 openboard
user1 9627 8.5 0.4 2017184 140220 ? Sl 22:14 0:00 openboard
user1 9678 0.0 0.0 9152 2404 pts/2 S+ 22:14 0:00 grep --color=auto openb*
问题是，如何彻底删除 openboard？