How to delete SMB shortcuts/links from the desktop?

I used File Manager to browse some files on my NAS:

//BACKUP/Files

When I did so, a shortcut (or symlink) was automatically placed on my desktop.

Now I cannot delete this item. When I attempt to do so, File Manager wants to delete the files on the NAS instead of the item on my desktop.

How can I remove this shortcut/link from the desktop?

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EDIT

Here’s my ls output:

pi@OFFSITE:~/Desktop $ ls -l
total 4
-rw-r--r-- 1 pi pi 202 Jul 19 18:46 ExternalUSB.desktop

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EDIT

Here’s my mount output:

pi@OFFSITE:~/Desktop $ mount
/dev/mmcblk0p7 on / type ext4 (rw,noatime)
devtmpfs on /dev type devtmpfs (rw,relatime,size=341236k,nr_inodes=85309,mode=755)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,relatime)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup2 on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
cgroup on /sys/fs/cgroup/net_cls type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=31,pgrp=1,timeout=0,minproto=5,maxproto=5,direct)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
/dev/mmcblk0p6 on /boot type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
/dev/sda1 on /mnt/elements type fuseblk (rw,nosuid,nodev,noexec,relatime,user_id=0,group_id=0,allow_other,blksize=4096)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=94664k,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)

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EDIT

Here’s my lsblk output:

pi@OFFSITE:~/Desktop $ lsblk --fs
NAME        FSTYPE LABEL    UUID                                 FSAVAIL FSUSE% MOUNTPOINT
sda                                                                             
└─sda1      ntfs            D6986D4D986D2CE5                        7.9T    14% /mnt/elements
mmcblk0                                                                         
├─mmcblk0p1 vfat   RECOVERY 9016-4EF8                                           
├─mmcblk0p2                                                                     
├─mmcblk0p5 ext4   SETTINGS 2fe2ad4a-81c1-430b-ad2a-a7fd4ed14971                
├─mmcblk0p6 vfat   boot     9AD7-B5BD                               213M    15% /boot
└─mmcblk0p7 ext4   root     e0c17230-abcf-45fc-abbe-fe49a78a61b1     18G    28% /

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EDIT

Note that the mounted drive seen above (sda/sd1), as well as the desktop shortcut pointing to it (ExternalUSB.desktop), are unrelated to this issue. The object that was automatically added to the desktop when I connected to my NAS so far hasn’t shown up in any terminal command I’ve issued.

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/dev/sda1 on /mnt/elements type fuseblk (rw,nosuid,nodev,noexec,relatime,user_id=0,group_id=0,allow_other,blksize=4096)