Removed --target-api option from dx.

Change-Id: Ia0d633edfe414061bb313f43c45f9ef55b45f380
diff --git a/samples/SampleSyncAdapter/Android.mk b/samples/SampleSyncAdapter/Android.mk
index 0f87c17..eec507b 100644
--- a/samples/SampleSyncAdapter/Android.mk
+++ b/samples/SampleSyncAdapter/Android.mk
@@ -10,8 +10,6 @@
 
 LOCAL_SDK_VERSION := current
 
-LOCAL_DX_FLAGS=--target-api=11
-
 include $(BUILD_PACKAGE)
 
 # Use the folloing include to make our test apk.