don't use these using statements in a header
don't use these using statements in a header

Change-Id: Iebf9af6996a2c07a20488404b0078b4a309223f4

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