Some where in your theme you should have:
add_theme_support( 'post-thumbnails' );
Instead of removing support for a post type try only adding support for the post types you want:
add_theme_support( 'post-thumbnails', array( 'post', 'movie' ) );
Some where in your theme you should have:
add_theme_support( 'post-thumbnails' );
Instead of removing support for a post type try only adding support for the post types you want:
add_theme_support( 'post-thumbnails', array( 'post', 'movie' ) );