removed propertyhelper, was used by simplepropertycontainer.cxx only, which is dead
removed propertyhelper, was used by simplepropertycontainer.cxx only, which is dead

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core