media: staging: atomisp: Don't override D3 delay settings here

The d3_delay parameter is set by arch/x86/pci/intel_mid_pci.c and
drivers/pci/quirks.c.

No need to override that settings in unrelated driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>