remove commented codes

Author: waitingkuo

tests/sqlparser_common.rs

@@ -4637,23 +4637,6 @@ fn parse_start_transaction() {
     );
 }
 
-/*
-#[test]
-fn parse_set_variable_to() {
-    match verified_stmt("SET SOMETHING TO 1") {
-        Statement::SetVariable { local, hivevar, variable, value
-        } => {
-            println!("{:?}", local);
-            assert!(!local);
-            assert!(!hivevar);
-            assert_eq!(variable, ObjectName(vec!["SOMETHING".into()]));
-            assert_eq!(value, vec![Expr::Value(Value::Number("1".into(), false))]);
-        }
-        _ => unreachable!(),
-    }
-}
-*/
-
 #[test]
 fn parse_set_variable() {
     match verified_stmt("SET SOMETHING = 1") {