remove unused header xftsfit.hxx
remove unused header xftsfit.hxx

Change-Id: Ia669845468a5f089864e4d08744871c9c05de61c

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