build: remove packages/ from 64-bit blacklist

Everything under packages/ will build for 64-bit now, and
package.mk has been updated to not produce 64-bit libraries
on devices that don't support them (all of them right now).

Change-Id: I2c10e41f727cfc8fe237819308a6dfa34c4fff3f
diff --git a/core/64_bit_blacklist.mk b/core/64_bit_blacklist.mk
index 75e1e33..8e5fb80 100644
--- a/core/64_bit_blacklist.mk
+++ b/core/64_bit_blacklist.mk
@@ -1,9 +1,5 @@
 ifneq ($(TARGET_2ND_ARCH),)
 
-# JNI - needs 64-bit VM
-_64_bit_directory_blacklist += \
-        packages/
-
 # Chromium/V8: needs 64-bit support
 _64_bit_directory_blacklist += \
 	external/chromium-libpac \