[PATCH 1/5] memtx: rtree: remove pointless index_vtab::begin_build implementation

[Vladimir Davydov <vdavydov.dev@gmail.com>]

The rtree is empty when this function is called (in fact, it is called
right after creating the index), there's no need to purge it.
---
 src/box/memtx_rtree.c | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/src/box/memtx_rtree.c b/src/box/memtx_rtree.c
index 7cd3ac30..ff213922 100644
--- a/src/box/memtx_rtree.c
+++ b/src/box/memtx_rtree.c
@@ -285,13 +285,6 @@ memtx_rtree_index_create_iterator(struct index *base,  enum iterator_type type,
 	return (struct iterator *)it;
 }
 
-static void
-memtx_rtree_index_begin_build(struct index *base)
-{
-	struct memtx_rtree_index *index = (struct memtx_rtree_index *)base;
-	rtree_purge(&index->tree);
-}
-
 static const struct index_vtab memtx_rtree_index_vtab = {
 	/* .destroy = */ memtx_rtree_index_destroy,
 	/* .commit_create = */ generic_index_commit_create,
@@ -313,7 +306,7 @@ static const struct index_vtab memtx_rtree_index_vtab = {
 		generic_index_create_snapshot_iterator,
 	/* .info = */ generic_index_info,
 	/* .reset_stat = */ generic_index_reset_stat,
-	/* .begin_build = */ memtx_rtree_index_begin_build,
+	/* .begin_build = */ generic_index_begin_build,
 	/* .reserve = */ generic_index_reserve,
 	/* .build_next = */ generic_index_build_next,
 	/* .end_build = */ generic_index_end_build,
-- 
2.11.0