"Forcibly" disabling a config option (CONFIG_BLOCK)?

I need to test a kernel build with the block layer (CONFIG_BLOCK) disabled. Starting with a realistic configuration, I haven't found a way to disable it, as it's selected by so many other options. Is there any convenient way to "forcibly" disable an option (along with everything that depends on or selects it)? TIA! -- ======================================================================== In Soviet Russia, Google searches you! ========================================================================