Revert "unbreak sdk_phone_x86 boot"

This reverts commit 70c96c7f11a29665d72f4ca509811780aca2ed42.

Reason for revert: root cause fixed

Bug: 146580512
Change-Id: I5d841637d5ca0ae8df8f5499a8b3f02488b4814e
diff --git a/target/product/sdk_phone_x86.mk b/target/product/sdk_phone_x86.mk
index 4f7602d..9df26a9 100644
--- a/target/product/sdk_phone_x86.mk
+++ b/target/product/sdk_phone_x86.mk
@@ -15,7 +15,6 @@
 #
 QEMU_USE_SYSTEM_EXT_PARTITIONS := true
 PRODUCT_USE_DYNAMIC_PARTITIONS := true
-BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flags 2
 
 #
 # All components inherited here go to system image