Remove Default Navigation Menu?

Hi,
I was testing out some themes and decided I wanted to stick with the blackbird theme. I went to activate it again and my custom menu of course didn't revert back to what I had it set on, probably from fooling with other themes. Anyway, I wanted to remove the default navigation menu (refer to image, I want to remove the circled area). I have a custom menu but when I used the code

.menu_wrapper{
display: none;
}

It actually takes away your menu as well as my custom one. I just want it back to normal again. Please help!

Screen Shot 4 is how my screen looks now, screen shot 5 is what I'm trying to get it back to if it helps make things clear.

Thank you in advance for your time.

 

I believe I resolved the problem. I removed this code:

<?php inkthemes_nav(); ?>

from my header.php and all looks normal again.