Remove non-module names from PRODUCT_PACKAGES

Bug: 5430740
Those files are in PRODUCT_COPY_FILES but not modules that can be put in
PRODUCT_PACKAGES.

Change-Id: I9e2f60de7ac2e12e6880e1365a36615835ca747c

Author: Ying Wang

data/keyboards/keyboards.mk

@@ -24,6 +24,3 @@ PRODUCT_COPY_FILES += $(foreach file,$(keycharmaps),\
 
 PRODUCT_COPY_FILES += $(foreach file,$(keyconfigs),\
     frameworks/base/data/keyboards/$(file):system/usr/idc/$(file))
-
-PRODUCT_PACKAGES := $(keylayouts) $(keycharmaps) $(keyconfigs)
-