platform/x86: Remove "default n" entries

Linus already once did that for PDx86, don't repeat our mistakes.
TL;DR: 'n' *is* the default 'default'.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210618125516.53510-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Author: andy-shev

drivers/platform/x86/Kconfig

@@ -1092,7 +1092,6 @@ config TOUCHSCREEN_DMI
 
 config FW_ATTR_CLASS
 	tristate
-	default n
 
 config INTEL_IMR
 	bool "Intel Isolated Memory Region support"

drivers/platform/x86/dell/Kconfig

@@ -5,7 +5,6 @@
 
 menuconfig X86_PLATFORM_DRIVERS_DELL
 	bool "Dell X86 Platform Specific Device Drivers"
-	default n
 	depends on X86_PLATFORM_DEVICES
 	help
 	  Say Y here to get to see options for device drivers for various