Remove cache parition on emulator

Bug: 136616665
Test: Boot aosp_x86_arm to home screen
Test: Boot aosp_x86 to home screen

Change-Id: Id20d96afacd89e73a6c45febad5151becbe85342
diff --git a/target/board/generic_x86_arm/BoardConfig.mk b/target/board/generic_x86_arm/BoardConfig.mk
index 3fbf79b..f6589b0 100644
--- a/target/board/generic_x86_arm/BoardConfig.mk
+++ b/target/board/generic_x86_arm/BoardConfig.mk
@@ -34,8 +34,6 @@
 
 # the settings differ from BoardConfigMainlineCommon.mk
 BOARD_USES_SYSTEM_OTHER_ODEX :=
-BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE := ext4
-BOARD_CACHEIMAGE_PARTITION_SIZE := 16777216
 
 # Resize to 4G to accomodate ASAN and CTS
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 4294967296