Sorry, tried it without leading space… didn´t work ether.
I tried now with “links2” Browser on the vm direct, and the URL : http://127.0.0.1:8080/xwiki/bin/delete/IT-Abteilung/Workplace/Rollout%20iPhone%20|%20Besondernheiten%20ab%20iOS%2012.1/
Link2 shows an “ok” but shows no content…
GOT IT !!! Thanks to everybody and Specially a double thank you to @vmassol !
In the “Delete page programatically” script, i used:
Space:
IT-Abteilung.Workplace.Rollout%20iPhone%20|%20Besondernheiten%20ab%20iOS%2012.1
Page:
Webhome
and this worked.