I got 4 of those on my N950 and here some of the things I tried:

- Re-download from nokia store and remove from applications UI
- Re-download from nokia store and remove using apt-get remove
- Re-download from nokia store and remove using dpkg -r (and -P)
- Re-download using apt-get and remove from applications UI
- Re-download using apt-get and remove using apt-get remove
- Re-download using apt-get and remove using dpkg -r (and -P)

(I haven't try to remove using the "x" button while editing home screen as it caused the problem for me).

Unfortunately, nothing worked.

But magically, they disappeared by themselves today. I have no idea how this happened but I removed some others apps from the device earlier.

The apps that were causing problem: real football, trojita, memailsettings and n9qtweak.

The problem was solved when removing wazapp from device using the applications UI (because I was using the dev version and I wanted to go back to version 0.2.6). I reinstalled wazapp later and some others apps too (meeln and front camera) and the problem did not return.

I also rebooted the device and booted to nitdroid and back to meego and there are no arrows down icon on my home screen.