branches/innodb+: row_purge_remove_sec_if_poss_low(): Remove a suspicious

assignment that was added in r990 to branches/fts and merged in r2324.

row/row0purge.c

@@ -368,8 +368,6 @@ row_purge_remove_sec_if_poss_low(
 
 	mtr_start(&mtr);
 
-	btr_cur->thr = que_node_get_parent(node);
-
 	row_search_index_entry(&was_buffered, index, entry,
 			       BTR_MODIFY_LEAF | BTR_DELETE, &pcur,
 			       &mtr);