hard drive – How to remove a Volume using Terminal?

A few weeks ago I mounted an external hard drive with a volume named “CJ 1TB”
I ejected it and thought everything was fine, but my system (11.2.1) has not forgotten about it.

When I run “ls” in Terminal, it shows my boot volume “Bamboo”, and “CJ 1TB”:

lrwxr-xr-x  1 root  wheel   1 Feb 17 13:58 Bamboo -> /
d--x--x--x  3 root  wheel  96 Feb  9 11:59 CJ 1TB

But when I run “diskutil list” the “CJ 1TB” does not show up:

/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *2.0 TB     disk0
   1:                        EFI ⁨EFI⁩                     314.6 MB   disk0s1
   2:                 Apple_APFS ⁨Container disk1⁩         2.0 TB     disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +2.0 TB     disk1
                                 Physical Store disk0s2
   1:                APFS Volume ⁨Bamboo - Data⁩           1.0 TB     disk1s1
   2:                APFS Volume ⁨Preboot⁩                 324.0 MB   disk1s2
   3:                APFS Volume ⁨Recovery⁩                613.7 MB   disk1s3
   4:                APFS Volume ⁨VM⁩                      1.1 GB     disk1s4
   5:                APFS Volume ⁨Bamboo⁩                  15.1 GB    disk1s5
   6:              APFS Snapshot ⁨com.apple.os.update-...⁩ 15.1 GB    disk1s5s1
   7:                APFS Volume ⁨SOT-BU⁩                  9.0 GB     disk1s7

Grateful for a solution…