Add delete table c after finished look-a-like test.

Author: Alena Rybakina

expected/look_a_like.out

@@ -552,5 +552,6 @@ SELECT 1 FROM aqo_reset();
 
 DROP TABLE a;
 DROP TABLE b;
+DROP TABLE c;
 DROP FUNCTION expln;
 DROP EXTENSION aqo CASCADE;

sql/look_a_like.sql

@@ -138,5 +138,6 @@ WHERE str NOT LIKE 'Query Identifier%' and str NOT LIKE '%Memory%' and str NOT L
 SELECT 1 FROM aqo_reset();
 DROP TABLE a;
 DROP TABLE b;
+DROP TABLE c;
 DROP FUNCTION expln;
 DROP EXTENSION aqo CASCADE;