misc: posixextra.vapi: remove stuff that has been applied upstream
misc: posixextra.vapi: remove stuff that has been applied upstream

slyon/debian-fso-deviced,slyon/debian-libfsoframework,slyon/debian-libfsoframework,slyon/debian-fso-usaged,slyon/debian-fso-usaged,slyon/debian-fso-deviced