writerfilter: remove unused effort.xsl
writerfilter: remove unused effort.xsl

Change-Id: I8e05b2d8e62acaab651f8db4098a8877713e81e0

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