Remove index on wfl attribtues in  schema init
Remove index on wfl attribtues in  schema init

As the init creates the value as a lontext the index creation failes.
Init code needs cleanup or replacement.

oliwel/openxpki,aleibl/openxpki,stefanomarty/openxpki,openxpki/openxpki,stefanomarty/openxpki,stefanomarty/openxpki,openxpki/openxpki,oliwel/openxpki,oliwel/openxpki,stefanomarty/openxpki,aleibl/openxpki,openxpki/openxpki,openxpki/openxpki,aleibl/openxpki,oliwel/openxpki,oliwel/openxpki,stefanomarty/openxpki,aleibl/openxpki,oliwel/openxpki,aleibl/openxpki,stefanomarty/openxpki,aleibl/openxpki