Remove tqual.h includes not needed.

src/backend/access/common/tupdesc.c

src/backend/access/gist/gist.c

src/backend/bootstrap/bootparse.y

src/backend/bootstrap/bootscanner.l

src/backend/bootstrap/bootstrap.c

src/backend/catalog/heap.c

src/backend/catalog/index.c

src/backend/catalog/pg_operator.c

src/backend/catalog/pg_type.c

src/backend/executor/execMain.c

src/backend/parser/parse_query.c

src/backend/rewrite/rewriteRemove.c

src/backend/storage/lmgr/lmgr.c

src/backend/tcop/aclchk.c

src/backend/utils/adt/acl.c

src/backend/utils/adt/selfuncs.c

src/backend/utils/adt/sets.c

src/backend/utils/cache/catcache.c

src/backend/utils/init/globals.c

src/backend/utils/init/postinit.c