Fix test regarding ZPP TypeErrors

We simply remove the second call to `odbc_data_source` since it is
testing standard ZPP behavior.

Author: cmb69

ext/odbc/tests/odbc_data_source_001.phpt

@@ -15,16 +15,12 @@ include 'config.inc';
 $conn = odbc_connect($dsn, $user, $pass);
 
 var_dump(odbc_data_source($conn, NULL));
-var_dump(odbc_data_source($conn, ''));
 var_dump(odbc_data_source($conn, SQL_FETCH_FIRST));
 
 ?>
 --EXPECTF--
 Warning: odbc_data_source(): Invalid fetch type (0) in %s on line %d
 bool(false)
-
-Warning: odbc_data_source() expects parameter 2 to be int, string given in %s on line %d
-NULL
 array(%d) {
 %a
 }