remove reference of emulator vold.fstab which is no longer necessary

Change-Id: I2c8d28060e8204ecbe255cb1e2752e3030dc2d99
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index 1918c33..82ed538 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -82,7 +82,6 @@
 
 PRODUCT_COPY_FILES := \
 	device/generic/goldfish/data/etc/apns-conf.xml:system/etc/apns-conf.xml \
-	system/core/rootdir/etc/vold.fstab:system/etc/vold.fstab \
 	frameworks/base/data/sounds/effects/camera_click.ogg:system/media/audio/ui/camera_click.ogg \
 	frameworks/base/data/sounds/effects/VideoRecord.ogg:system/media/audio/ui/VideoRecord.ogg \
 	frameworks/native/data/etc/handheld_core_hardware.xml:system/etc/permissions/handheld_core_hardware.xml \