Revert "Enable chained vbmeta for boot"

Revert "Allow init boot_block_device:lnk_file relabelto."

Revert submission 1514903-chain_vbmeta_redbull

Reason for revert: test b/174826519
Reverted Changes:
I1cae1ef76:Enable chained vbmeta for boot
I820cbaf20:Allow init boot_block_device:lnk_file relabelto.

Change-Id: I62db277a495a993f60ce1dcf9808c8e7ba43546c
(cherry picked from commit 9ae0b69cefff8f186302c9ed7b2c86545085ed74)
diff --git a/BoardConfig-common.mk b/BoardConfig-common.mk
index cf907e9..dcc8f41 100644
--- a/BoardConfig-common.mk
+++ b/BoardConfig-common.mk
@@ -102,12 +102,6 @@
 BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
 BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX_LOCATION := 1
 
-# Enable chained vbmeta for boot images
-BOARD_AVB_BOOT_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
-BOARD_AVB_BOOT_ALGORITHM := SHA256_RSA2048
-BOARD_AVB_BOOT_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
-BOARD_AVB_BOOT_ROLLBACK_INDEX_LOCATION := 2
-
 # product.img
 BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE := ext4
 
diff --git a/fstab.hardware b/fstab.hardware
index d27d483..912363c 100644
--- a/fstab.hardware
+++ b/fstab.hardware
@@ -1,7 +1,6 @@
 # Android fstab file.
 
 #<src>                                                  <mnt_point>            <type>  <mnt_flags and options>                              <fs_mgr_flags>
-/dev/block/bootdevice/by-name/boot                      /boot                  emmc    defaults                                             slotselect,avb=boot,first_stage_mount
 system                                                  /system                ext4    ro,barrier=1                                         wait,slotselect,avb=vbmeta_system,logical,first_stage_mount
 system_ext                                              /system_ext            ext4    ro,barrier=1                                         wait,slotselect,avb=vbmeta_system,logical,first_stage_mount
 vendor                                                  /vendor                ext4    ro,barrier=1                                         wait,slotselect,avb=vbmeta,logical,first_stage_mount