Fix binary_swap failure.

The pg_get_viewdef() function was fixed to properly show views define.
Should remove the view which not supported in old version before the
binary swap test.

src/test/binary_swap/test_binary_swap_pre.sql

@@ -7,6 +7,7 @@
 -- test suite. Ignore by removing the view.
 \c regression;
 DROP VIEW IF EXISTS locktest_segments;
+DROP VIEW IF EXISTS notdisview;
 
 \c isolation2test;
 DROP VIEW IF EXISTS locktest_segments;