writerfilter: remove dead PLCF
writerfilter: remove dead PLCF

Change-Id: I7915021745d2d99e1cec882ca2928e932dbffbef

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