don't install libsync in vndk

libsync is an NDK lib and installing this in vndk fails the linker
namespace CTS test

Bug: 37472929
Test: ./cts-tradefed run cts -m CtsJniTestCases -t \
      android.jni.cts.JniStaticTest#test_linker_namespaces

Change-Id: I3b9fca2b47014ca351dd3ae621bbea55ab888471
Signed-off-by: Sandeep Patil <sspatil@google.com>
diff --git a/device-common.mk b/device-common.mk
index f8f872e..527a1e9 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -618,4 +618,3 @@
     libhidltransport.vndk-sp\
     libutils.vndk-sp\
     libc++.vndk-sp\
-    libsync.vndk-sp\
diff --git a/vndk/Android.mk b/vndk/Android.mk
index fdb49ba..3815d9d 100644
--- a/vndk/Android.mk
+++ b/vndk/Android.mk
@@ -14,7 +14,6 @@
     libhidltransport\
     libutils\
     libc++\
-    libsync\
 
 define add-vndk-sp-lib
 include $$(CLEAR_VARS)