Remove --no-stream from script.

--no-stream runs art executions on parallel, which doesn't work
when all processes want to generate a boot image at the same
location.

Test: run-libcore-tests
Change-Id: Ica93393f9cb4fb35465e0b432cb5af62b4289f4f
diff --git a/tools/run-libcore-tests.sh b/tools/run-libcore-tests.sh
index 51c7348..673eea8 100755
--- a/tools/run-libcore-tests.sh
+++ b/tools/run-libcore-tests.sh
@@ -169,4 +169,4 @@
 # Run the tests using vogar.
 echo "Running tests for the following test packages:"
 echo ${working_packages[@]} | tr " " "\n"
-vogar --no-stream $vogar_args $expectations $(cparg $DEPS) ${working_packages[@]}
+vogar $vogar_args $expectations $(cparg $DEPS) ${working_packages[@]}