Revert "ANDROID: Add CONFIG_BLK_DEV_NULL_BLK=m to gki_defconfig"

This reverts commit d217ccf7c8.

Debug drivers should not be included in the GKI kernel configuration.
Hence this revert.

Bug: 326456248
Change-Id: I18db9d07ad49b22f09b6b3414d39e6ed0a728d73
Signed-off-by: Bart Van Assche <bvanassche@google.com>

arch/arm64/configs/gki_defconfig

@@ -316,7 +316,6 @@ CONFIG_ARM_SCPI_PROTOCOL=y
 # CONFIG_ARM_SCPI_POWER_DOMAIN is not set
 # CONFIG_EFI_ARMSTUB_DTB_LOADER is not set
 CONFIG_GNSS=y
-CONFIG_BLK_DEV_NULL_BLK=m
 CONFIG_ZRAM=m
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_LOOP_MIN_COUNT=16

arch/x86/configs/gki_defconfig

@@ -294,7 +294,6 @@ CONFIG_FW_LOADER_USER_HELPER=y
 # CONFIG_FW_CACHE is not set
 CONFIG_GNSS=y
 CONFIG_OF=y
-CONFIG_BLK_DEV_NULL_BLK=m
 CONFIG_ZRAM=m
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_DEV_LOOP_MIN_COUNT=16

modules.bzl

@@ -8,7 +8,6 @@ This module contains a full list of kernel modules
 
 _COMMON_GKI_MODULES_LIST = [
     # keep sorted
-    "drivers/block/null_blk/null_blk.ko",
     "drivers/block/zram/zram.ko",
     "drivers/bluetooth/btbcm.ko",
     "drivers/bluetooth/btqca.ko",