pgsql: Remove dead code now that orindxpath.c is history.

Remove dead code now that orindxpath.c is history.

We don't need make_restrictinfo_from_bitmapqual() anymore at all.
generate_bitmap_or_paths() doesn't need to be exported, and we can
drop its rather klugy restriction_only flag.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/f7fbf4b0be509d964041ee13311b9203a035e4ab

Modified Files
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src/backend/optimizer/path/indxpath.c | 59 ++-------
src/backend/optimizer/plan/createplan.c | 3 -
src/backend/optimizer/util/restrictinfo.c | 187 -----------------------------
src/include/optimizer/paths.h | 3 -
src/include/optimizer/restrictinfo.h | 3 -
5 files changed, 8 insertions(+), 247 deletions(-)