Remove libpac and v8 from the 64-bit blacklist.

external/chromium-libpac has been updated to depend on the copy of V8 in
external/chromium_org, and its makefiles updated to be multilib-safe.
external/v8 is thus unused and has been removed from the tree.

Bug: 12452053
Change-Id: I757fa187f7f67cd9a89d4b228d4ce3ed6d2858b1
diff --git a/core/64_bit_blacklist.mk b/core/64_bit_blacklist.mk
index a237935..b7420cd 100644
--- a/core/64_bit_blacklist.mk
+++ b/core/64_bit_blacklist.mk
@@ -1,10 +1,5 @@
 ifneq ($(TARGET_2ND_ARCH),)
 
-# chromium-libpac needs porting to the chromium_org V8 instead of legacy V8.
-_64_bit_directory_blacklist += \
-	external/chromium-libpac \
-	external/v8 \
-
 # misc build errors
 _64_bit_directory_blacklist += \
 	device/generic/goldfish/opengl \