Unset BOARD_EXT4_SHARE_DUP_BLOCKS

* This allows us to remount ext4 partitions read-write
  on devices with dynamic partitions.

This reverts the following commits:

Revert "Move BOARD_EXT4_SHARE_DUP_BLOCKS to BoardConfigMainlineCommon.mk"

This reverts commit I0eb035ba6edf44719d5de4f09fd97b5783537597.

Revert "enable BOARD_EXT4_SHARE_DUP_BLOCKS for generic_arm64"

This reverts commit 125b6d6eea.

Change-Id: I3768374d6da59f969ea44c1965f75c934edf3b57

target/board/BoardConfigEmuCommon.mk

@@ -33,6 +33,8 @@ ifeq ($(PRODUCT_USE_DYNAMIC_PARTITIONS),true)
   # emulator needs super.img
   BOARD_BUILD_SUPER_IMAGE_BY_DEFAULT := true
 
+  BOARD_EXT4_SHARE_DUP_BLOCKS := true
+
   # 3G + header
   BOARD_SUPER_PARTITION_SIZE := 3229614080
   BOARD_SUPER_PARTITION_GROUPS := emulator_dynamic_partitions

target/board/BoardConfigMainlineCommon.mk

@@ -6,8 +6,6 @@
 TARGET_NO_BOOTLOADER := true
 TARGET_NO_RECOVERY := true
 
-BOARD_EXT4_SHARE_DUP_BLOCKS := true
-
 TARGET_USERIMAGES_USE_EXT4 := true
 
 # Mainline devices must have /system_ext, /vendor and /product partitions.