I have simple product with SKU say: SKU01 and SKU02
And I have a bundled product with its own SKU say: SKUB01,
This SKUB01 have bundled items consist of two simple SKU: SKU01 and SKU02,
The question is: I want to disable the selling of SKU01 meanwhile still be able to sell the bundled product SKUB01,
How to do that in Magento v1.9.8?