build: remove our extra apps from default list

based on PRODUCT_EXCLUDE_EXTRA_PACKAGES=true

Change-Id: I5ae757c3a8d246f39e989e771faed69ec5be34ad
diff --git a/target/product/handheld_product.mk b/target/product/handheld_product.mk
index 8755ae6..cb58603 100644
--- a/target/product/handheld_product.mk
+++ b/target/product/handheld_product.mk
@@ -22,18 +22,21 @@
 
 # /product packages
 PRODUCT_PACKAGES += \
-    Browser2 \
-    Calendar \
     Camera2 \
     Contacts \
-    DeskClock \
-    Gallery2 \
     LatinIME \
-    Music \
     preinstalled-packages-platform-handheld-product.xml \
-    QuickSearchBox \
     SettingsIntelligence \
     frameworks-base-overlays
 
+ifneq ($(PRODUCT_EXCLUDE_EXTRA_PACKAGES),true)
+PRODUCT_PACKAGES += \
+    Browser2 \
+    Calendar \
+    DeskClock \
+    Gallery2 \
+    Music
+endif
+
 PRODUCT_PACKAGES_DEBUG += \
     frameworks-base-overlays-debug