You can have it removed, it's perfectly ok.
HOWEVER, let me explain & share one tiny little thing with you before you do that:
When i married my ex-husband I had that part taken out, because I was sitting there thinking "obey??? Yeah right? He's not my "master". "
We divorced, and I never really thought much else about it until i Met my BF. And I realized something with him. When you Truly LOVE a man and that man truly loves you, everything changes. That man, as part of his vows is swearing to love you, honor you, protect you, guide you, and always act as the "head of the household" always doing what is in your best interest. Part of these vows, if you have a religious ceremony, is him taking the responsibility to be the spiritual head of the house and to "love you like GOD loves the church".
You as the woman, when you are promising to obey him, it's not so much of a "yes master" type of obeying. It's obeying him because you know full heartedly that you love this man and this man loves you more than anything else in the world, and will always have YOUR best interest in mind.
We women these days have become strong, but deep down, we still WANT a man to protect us. In order for them to protect us, we have to be able to TRUST that everything they do, they do in our best interest.
So in the same sense that he promises to Love us like God loves the church, we are to obey him like man is to obey God. We "obey" God so easily, but we do because we have faith in knowing he always knows what is best for us and would never lead us down the wrong path or abuse that power.
When you can love a man in a similar way, it's truly an amazing thing.
So stop and ask yourself what that "obey" means to you, and why it is that you have such a hard time with saying it.
My BF made me realize all of this...not by anything he has said, but purely by his actions!!! If he told me to jump of of a 20' cliff with him, I would (exaggeration) because I would know that there was some logical reasoning for it, and i would know that he was acting in our best interest. I would know all of this without ever questioning him either, because he has shown me time and time again that he is ALWAYS looking out for me.