vold: remove $(KERNEL_HEADERS) from include path

The kernel headers are already in the include path, and manually
adding them again will break on a multiarch build, where the
kernel headers may be different for each arch.

Change-Id: Ifb11fa7bdff6b317c44258968244313b7039a9e1

Android.mk

@@ -20,7 +20,6 @@ common_src_files := \
 	cryptfs.c
 
 common_c_includes := \
-	$(KERNEL_HEADERS) \
 	system/extras/ext4_utils \
 	external/openssl/include \
 	external/stlport/stlport \
@@ -83,7 +82,7 @@ LOCAL_SRC_FILES:= vdc.c
 
 LOCAL_MODULE:= vdc
 
-LOCAL_C_INCLUDES := $(KERNEL_HEADERS)
+LOCAL_C_INCLUDES :=
 
 LOCAL_CFLAGS :=