Show Desc and Qty Only

I want to show only Description and Qty on Sales Quotes, can anyone help me?

A quote means quoting the price. So it will show the unit price and amount columns. That is the purpose of quotes. Other columns will not show if you have not entered anything in them.

I want to use this for printed to ask preparing product from inventory keeper, and i don’t want the keeper know about the price.

I think what you are saying is production order. Enable Production Order feature from customize option and use it to issue production orders for inventory items.