sw: code simplification
sw: code simplification

XEmbeddedObject already implements XClassifiedObject which contains a
getClassID method.

Change-Id: Ifbeed343493208fff3704b21ee484fd92c570974

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