nautilus-extension: don't implement _get_toolbar_items()
nautilus-extension: don't implement _get_toolbar_items()

It got removed from nautilus 2.91.90, and that code does nothing anyway.

outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker