Remove ECHO from expectation #86

Remove the `\set ECHO none` from expectation that is automatically
removed by the test harness but still appears in the output when a test
fails.

test/CDB_QueryTablesTest_expect

@@ -1,4 +1,3 @@
-\set ECHO none
 SELECT * FROM geometry_columns|{pg_catalog.pg_attribute,pg_catalog.pg_class,pg_catalog.pg_namespace,pg_catalog.pg_type}
 SELECT a.attname FROM pg_class c JOIN pg_attribute a on (a.attrelid = c.oid)|{pg_catalog.pg_attribute,pg_catalog.pg_class}
 CREATE table "my'tab;le" as select 1|{}