Really include drawables for all densities.

Previously with "PRODUCT_AAPT_CONFIG := normal" resource with modifier
"small" isn't included.

Bug: 21643610
Change-Id: I53940d716fb9705462b1abb882e04103e211f8af

target/product/full_base.mk

@@ -45,9 +45,6 @@ PRODUCT_PROPERTY_OVERRIDES := \
 # Put en_US first in the list, so make it default.
 PRODUCT_LOCALES := en_US
 
-# Include drawables for all densities
-PRODUCT_AAPT_CONFIG := normal
-
 # Get some sounds
 $(call inherit-product-if-exists, frameworks/base/data/sounds/AllAudio.mk)