Do you have disconnected it from the motherboard completely? Then this is for you:
Download DisDF.lha from Aminet and install it.
Place these lines in your startup-sequence:
c:disDF 0 -d
assign df0: dismount
assign df0: remove
;DF0: eradicated >
Also:
assign cc0: dismount ;ONLY in case you don't use your PCMCIA port, (A600/A1200) you have attached a network card or anything that doesn't use the cc0: device. (Totally optional and unrelated to the subject...)
The benefits of this, are not only that you get rid of the ghosted floppy icon on the WorkBench screen, but most importantly, you stop trackdisk.device from wasting CPU cycles. It does that even if the drive is disconnected.
NoClick patches become obsolete of course. You can remove df0: from the list of hidden devices in the Workbench prefs if you like. (AmigaOS 3.9)