Rely on the platform -std default.

Bug: http://b/32019064
Test: builds
Change-Id: I18a1d816d63b64601485045070851f32d44e85eb
diff --git a/libnativebridge/tests/Android.nativebridge-dummy.mk b/libnativebridge/tests/Android.nativebridge-dummy.mk
index 551765a..e556f80 100644
--- a/libnativebridge/tests/Android.nativebridge-dummy.mk
+++ b/libnativebridge/tests/Android.nativebridge-dummy.mk
@@ -12,7 +12,7 @@
 LOCAL_SRC_FILES:= $(NATIVE_BRIDGE_COMMON_SRC_FILES)
 LOCAL_CLANG := true
 LOCAL_CFLAGS += -Werror -Wall
-LOCAL_CPPFLAGS := -std=gnu++11 -fvisibility=protected
+LOCAL_CPPFLAGS := -fvisibility=protected
 LOCAL_SHARED_LIBRARIES := libdl
 LOCAL_MULTILIB := both
 
@@ -27,7 +27,7 @@
 LOCAL_SRC_FILES:= $(NATIVE_BRIDGE_COMMON_SRC_FILES)
 LOCAL_CLANG := true
 LOCAL_CFLAGS += -Werror -Wall
-LOCAL_CPPFLAGS := -std=gnu++11 -fvisibility=protected
+LOCAL_CPPFLAGS := -fvisibility=protected
 LOCAL_LDFLAGS := -ldl
 LOCAL_MULTILIB := both
 
@@ -48,7 +48,7 @@
 LOCAL_SRC_FILES:= $(NATIVE_BRIDGE2_COMMON_SRC_FILES)
 LOCAL_CLANG := true
 LOCAL_CFLAGS += -Werror -Wall
-LOCAL_CPPFLAGS := -std=gnu++11 -fvisibility=protected
+LOCAL_CPPFLAGS := -fvisibility=protected
 LOCAL_SHARED_LIBRARIES := libdl
 LOCAL_MULTILIB := both
 
@@ -63,7 +63,7 @@
 LOCAL_SRC_FILES:= $(NATIVE_BRIDGE2_COMMON_SRC_FILES)
 LOCAL_CLANG := true
 LOCAL_CFLAGS += -Werror -Wall
-LOCAL_CPPFLAGS := -std=gnu++11 -fvisibility=protected
+LOCAL_CPPFLAGS := -fvisibility=protected
 LOCAL_LDFLAGS := -ldl
 LOCAL_MULTILIB := both