Update README.md

Author: j5ik2o

README.md

@@ -69,64 +69,6 @@ The `DockerController` for the corresponding preset is as follows. Please see th
   - [MinioController](docker-controller-scala-minio/src/main/scala/com/github/j5ik2o/dockerController/minio/MinioController.scala) / [MinioControllerSpec](docker-controller-scala-minio/src/test/scala/com/github/j5ik2o/dockerController/minio/MinioControllerSpec.scala)
   - [ElasticMQController](docker-controller-scala-elasticmq/src/main/scala/com/github/j5ik2o/dockerController/elasticmq/ElasticMQController.scala) / [ElasticMQControllerSpec](docker-controller-scala-elasticmq/src/test/scala/com/github/j5ik2o/dockerController/elasticmq/ElasticMQControllerSpec.scala)
 
-```scala
-class MySQLControllerSpec extends AnyFreeSpec with DockerControllerSpecSupport {
-
-  val hostPort: Int               = temporaryServerPort()
-  val rootPassword: String        = "test"
-  val dbName                      = "test"
-  
-  // MySQL
-  val controller: MySQLController = MySQLController(dockerClient)(hostPort, rootPassword, databaseName = Some(dbName))
-
-  // Specify DockerControllers to be launched.
-  override protected val dockerControllers: Vector[DockerController] = Vector(controller)
-
-  // Set the condition to wait for the container to be started.
-  override protected val waitPredicatesSettings: Map[DockerController, WaitPredicateSetting] =
-    Map(
-      controller -> WaitPredicateSetting(
-        Duration.Inf,
-        WaitPredicates.forListeningHostTcpPort(
-          dockerHost,
-          hostPort,
-          1.seconds,
-          Some(3.seconds)
-        )
-      )
-    )
-
-  "MySQLController" - {
-    "run" in {
-      var conn: Connection     = null
-      var stmt: Statement      = null
-      var resultSet: ResultSet = null
-      try {
-        Class.forName("com.mysql.cj.jdbc.Driver")
-        conn = DriverManager.getConnection(
-          s"jdbc:mysql://$dockerHost:$hostPort/$dbName?user=root&password=$rootPassword"
-        )
-        stmt = conn.createStatement
-        resultSet = stmt.executeQuery("SELECT 1 FROM DUAL")
-        while (resultSet.next())
-          assert(resultSet.getInt(1) == 1)
-      } catch {
-        case NonFatal(ex) =>
-          fail("occurred error", ex)
-      } finally {
-        if (resultSet != null)
-          resultSet.close()
-        if (stmt != null)
-          stmt.close()
-        if (conn != null)
-          conn.close()
-      }
-    }
-  }
-}
-
-```
-
 ### Use Flyway Migrate Command on MySQL/PostgreSQL
 
 If you'd like to use `flyway` module, you can use `docker-controller-scala-flyway`.