Change your function to this:
add_action( 'after_setup_theme','tu_gp_move_meta' );
function tu_gp_move_meta() {
remove_action( 'generate_after_entry_title', 'generate_post_meta' );
remove_action( 'generate_after_entry_content', 'generate_footer_meta' );
add_action( 'generate_before_entry_title', 'generate_post_meta' );
add_action( 'generate_before_entry_title', 'generate_footer_meta' );
}Hope this helps 🙂