pit: Stop compiling in the max77686 driver on pit.

That part isn't used on pit.

Change-Id: I48f3a10f7e6eb89b1e9630d2372b6865b4c12a7f
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3687
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/pit/Kconfig

@@ -27,7 +27,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_I2C
 	select BOARD_ROMSIZE_KB_4096
-	select DRIVER_MAXIM_MAX77686
 	select CHROMEOS
 	select MAINBOARD_HAS_NATIVE_VGA_INIT
 	select MAINBOARD_DO_NATIVE_VGA_INIT