Remove license field on contentnode fixture.
Remove license field on contentnode fixture.

DXCanas/kolibri,mrpau/kolibri,christianmemije/kolibri,christianmemije/kolibri,lyw07/kolibri,christianmemije/kolibri,DXCanas/kolibri,indirectlylit/kolibri,lyw07/kolibri,jonboiser/kolibri,jonboiser/kolibri,mrpau/kolibri,benjaoming/kolibri,benjaoming/kolibri,jonboiser/kolibri,benjaoming/kolibri,indirectlylit/kolibri,learningequality/kolibri,DXCanas/kolibri,mrpau/kolibri,indirectlylit/kolibri,DXCanas/kolibri,learningequality/kolibri,learningequality/kolibri,mrpau/kolibri,lyw07/kolibri,learningequality/kolibri,indirectlylit/kolibri,christianmemije/kolibri,jonboiser/kolibri,benjaoming/kolibri,lyw07/kolibri