writerfilter: remove unused resourcesimpl

Change-Id: I7120333562d926f9d535d265d2caf8c5a95cc558
writerfilter: remove unused WW8FKP

Change-Id: I3ba91a01b7d2acc23ae0d67ba776eb79b0280414
writerfilter: remove unused WW8CpAndFc

Change-Id: I3e56a41c6fe5fab3e16d8e09a5404d83f5477738
writerfilter: remove unused WW8Stream

Change-Id: I375b4768bc4474f78f6857176c8b77856609aeaa