not sure what your asking, (could just be me being tired...:( ) but can't you just remove blueberry cheesecake from the array?
$cheesecake = array("Apple Cheesecake", "Blueberry Cheesecake", "Strawberry Cheesecake", "Mango Cheesecake", "Raspberry Cheesecake");
I mean that would definetly get rid of blueberry cheesecake if you delete... so it will look like this...
$cheesecake = array("Apple Cheesecake", "Strawberry Cheesecake", "Mango Cheesecake", "Raspberry Cheesecake");
If there is another problem... it could be from somewhere else in your php...
(I CAN'T BELIEVE I AM ACTUALLY HELPING YOU!!! YOU ALWAYS ANSWER MY QUESTIONS, NOW I GET TO PARTICIPATE IN ANSWERING YOURS!!! WOOHOO)