Fix buck failure

Summary:
Buck is failing due to missing args: https://circleci.com/gh/facebook/react-native/29268
Closes #17346

Differential Revision: D6642181

Pulled By: hramos

fbshipit-source-id: 399d3c5f197ae0de9748a592def945c14ac1d348

ReactAndroid/DEFS

@@ -110,4 +110,4 @@ def rn_robolectric_test(name, srcs, vm_args = None, *args, **kwargs):
 
 
 def fb_xplat_cxx_library(allow_jni_merging=None, **kwargs):
- cxx_library(*args, **kwargs)
+ cxx_library(**kwargs)