Успешный запуск демо приложения Yandex.Mapkit + чистка кода

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <!--<TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Hello World!"

        app:layout_constraintBottom_toBottomOf="parent"

        app:layout_constraintLeft_toLeftOf="parent"

        app:layout_constraintRight_toRightOf="parent"

        app:layout_constraintTop_toTopOf="parent" />

        -->

    <com.yandex.mapkit.mapview.MapView

        android:id="@+id/mapview"

        android:layout_width="match_parent"