[Cudazi Mono theme] how to remove logo

I am using the mono theme and I have removed the logo.png from the code found in header.php and now my menu has been changed.

This is the code:

$logo_upload = cudazi_get_option( get_option_tree(‘logo_upload’, $cudazi_theme_options, false, false ), get_template_directory_uri() . ‘/images/logo.png’, false );

My menu is now going from top to bottom as opposed to left to right. How do I fix this?