What is the efficient way to merge a bunch of paths into one?
Could someone tell me how to do the following more efficiently in Illustrator?
I began with this vector:

I want to simplify it by removing all the detail in the center. It is very "bitty" - there are lots and lots of paths in that space.
What I did was use the pentool to create a new closed path on top of that area, to cover it up. Like so:

I'm pretty certain that is the most inefficient way to accomplish this goal, and also that it results in a file what only looks good small. I'm not great with the pen tool, so I'm sure if you saw this big you would notice lots of wonkiness.
Any thoughts on a more sophisticated and efficient approach? Here is a link to the original file.
