Remove unnecessary lines in PRODUCT_PACKAGES

After applied https://android-review.googlesource.com/48504,
Nfc now depends on libnfc_jni, and libnfc_jni depends on libnfc.
No need to list the libs in PRODUCT_PACKAGES.

Change-Id: I2f32271336aad47ae97c495d980b45b7c6daa4b1
diff --git a/device.mk b/device.mk
index 8ba2144..c4f09c4 100644
--- a/device.mk
+++ b/device.mk
@@ -96,8 +96,6 @@
 
 # NFC
 PRODUCT_PACKAGES += \
-        libnfc \
-        libnfc_jni \
         Nfc \
         Tag