Bug#15675 - ndb - fix read_multi_range.test drop all tables it using

  NOTE: only changes to test script


mysql-test/t/ndb_read_multi_range.test:
  Bug#15675 - ndb - fix read_multi_range.test drop all tables it using

mysql-test/t/ndb_read_multi_range.test

@@ -2,7 +2,7 @@
 -- source include/not_embedded.inc
 
 --disable_warnings
-DROP TABLE IF EXISTS t1, r1;
+DROP TABLE IF EXISTS t1, t2, r1;
 --enable_warnings
 
 #