Avoid JUnit4 collision in android-support-test, mockito-target

Bug: 31072145
Test: make droid checkbuild

Change-Id: I3fa71d30b139461e36bec746fdac8eee048273be
diff --git a/tests/Android.mk b/tests/Android.mk
index 8f500de..2c81c5d 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -5,7 +5,7 @@
 LOCAL_MODULE_TAGS := tests
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
-    mockito-target \
+    mockito-target-minus-junit4 \
     android-support-test
 
 LOCAL_JAVA_LIBRARIES := android.test.runner