Remove densities from deprecated flag

PRODUCT_AAPT_PREF_CONFIG takes care of densities, PRODUCT_AAPT_CONFIG
will complain if we put densities in there.

Change-Id: I46fe84f3ce32b3560651ea06cf3619375702eebb
diff --git a/device.mk b/device.mk
index 5511410..f040b2a 100644
--- a/device.mk
+++ b/device.mk
@@ -167,7 +167,7 @@
     device/htc/flounder/nfc/libnfc-brcm.conf:system/etc/libnfc-brcm.conf \
     device/htc/flounder/nfc/libnfc-brcm-20795a10.conf:system/etc/libnfc-brcm-20795a10.conf
 
-PRODUCT_AAPT_CONFIG := normal large xlarge hdpi xhdpi xxhdpi
+PRODUCT_AAPT_CONFIG := normal large xlarge
 PRODUCT_AAPT_PREF_CONFIG := xhdpi
 
 PRODUCT_CHARACTERISTICS := tablet,nosdcard