Floppy disks are not used anymore, at least not at laptops, so a good thing is to disable the floppy module.
To do that, add floppy to the blacklist, unload the floppy module and update the initramsfs.
$ echo "blacklist floppy" | sudo tee /etc/modprobe.d/blacklist-floppy.conf
$ sudo rmmod floppy
$ sudo update-initramfs -u
Also, instead of rmmod floppy, you can use modprobe -r floppy.
Now, your /dev/fd0 module is unloaded and this setting will persist even after reboot.
If you get errors because the floppy drive is mounded when you try unload it, edit (as root) the /dev/fd0 file and remove the /dev/fd0 line from it.