[xubuntu-users] modifying/editing "All Settings" menu?

[Ulli Horlacher]

This is Xubuntu 16.04:

Something has added many many "Settings Manager" icons in the "All
Settings" menu:

http://fex.rus.uni-stuttgart.de/fop/9vgdeWDq/X-20170305092728.png

How can I get rid of them?
Where is the config file for this menu?


-- 
Ullrich Horlacher              Server und Virtualisierung
Rechenzentrum TIK         
Universitaet Stuttgart         E-Mail: horlacher at tik.uni-stuttgart.de
Allmandring 30a                Tel:    ++49-711-68565868
70569 Stuttgart (Germany)      WWW:    http://www.tik.uni-stuttgart.de/
REF:<20170305083258.GA32011 at rus.uni-stuttgart.de>