Remove unused SID_s from sfx.sdi

...at least, removing them has no effect on the generated workdir/SdiTarget/ *.hxx

Change-Id: I0e3fffe27593cfbf5aed267c3f47bc85581954c8
Remove some completely unused SID_s

Change-Id: I1a259f9af77bbbffc4f0bc85beb7945e3d74ff77