fix(sql-introspection-tests): remove outdated mysql test

schema-engine/sql-introspection-tests/tests/tables/mysql.rs

@@ -279,35 +279,6 @@ async fn a_table_with_fulltext_index_with_custom_name(api: &mut TestApi) -> Test
     Ok(())
 }
 
-#[test_connector(tags(Mysql))]
-async fn a_table_with_fulltext_index_without_preview_flag(api: &mut TestApi) -> TestResult {
-    let setup = indoc! {r#"
-        CREATE TABLE `A` (
-            `id` INT          PRIMARY KEY,
-            `a`  VARCHAR(255) NOT NULL,
-            `b`  TEXT         NOT NULL
-        );
-
-        CREATE FULLTEXT INDEX A_a_b_idx ON `A` (a, b);
-    "#};
-
-    api.raw_cmd(setup).await;
-
-    let expected = expect![[r#"
-        model A {
-          id Int    @id
-          a  String @db.VarChar(255)
-          b  String @db.Text
-
-          @@index([a, b])
-        }
-    "#]];
-
-    expected.assert_eq(&api.introspect_dml().await?);
-
-    Ok(())
-}
-
 #[test_connector(tags(Mysql), exclude(Mariadb))]
 async fn date_time_defaults(api: &mut TestApi) -> TestResult {
     let setup = indoc! {r#"