You can't be serious.
Remove the interior columns & that structure would collapse.
The bar joist would need to be significantly taller (you can just make them out in the photo).
All the load the interior columns would now be transferred to the exterior columns.
That means much larger columns & a moment force added to that connection.
Now you need to consider wind loads and the racking forces the exterior columns would
need to withstand from the wind. The resulting design would be much more expensive than the cost
of the columns removed.
Make sure your name is not on the drawings!