Hikamarket - How to remove fields from the "Vendors' add product" form.

I want to drop some of the fields in the "add product" form for vendors. Where vendors add products to review and approve.
I tried to remove them using access level of Hikamarket but it didn't work. Also, I dropped them in the related PHP file but it returns error.
What's the standard way to get rid of some fields like: product code, in stock, weight etc?

I found the solution. I'd edited Vendor's access level. But didn't get to the result. Now, I edited Product access level in Market > configuration > access level.
Now I got the field I need and have dropped the rest of the fields.