Allow private methods in interfaces.

Private methods may be generated in interfaces during compilation of
some default methods.  Change the verifier to allow these methods.

Bug: 27999840

Change-Id: Ib8120a8f6cb036021334d9af0ed78ae372974ecb
diff --git a/test/run-test b/test/run-test
index 01464cd..013fc63 100755
--- a/test/run-test
+++ b/test/run-test
@@ -46,7 +46,7 @@
 export DEX_LOCATION=/data/run-test/${test_dir}
 export NEED_DEX="true"
 export USE_JACK="true"
-export SMALI_ARGS="--experimental --api-level 23"
+export SMALI_ARGS="--experimental"
 
 # If dx was not set by the environment variable, assume it is in the path.
 if [ -z "$DX" ]; then