Stop asking for old versions of C++ in system/core.

Bug: http://b/32019064
Test: builds
Change-Id: I1befc647b581bd293f98010e816b6413caab5e6c
diff --git a/gatekeeperd/tests/Android.mk b/gatekeeperd/tests/Android.mk
index a62b1d4..c38c64b 100644
--- a/gatekeeperd/tests/Android.mk
+++ b/gatekeeperd/tests/Android.mk
@@ -19,7 +19,7 @@
 include $(CLEAR_VARS)
 LOCAL_MODULE := gatekeeperd-unit-tests
 LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
-LOCAL_CFLAGS += -g -Wall -Werror -std=gnu++11 -Wno-missing-field-initializers
+LOCAL_CFLAGS += -g -Wall -Werror -Wno-missing-field-initializers
 LOCAL_SHARED_LIBRARIES := libgatekeeper libcrypto libbase
 LOCAL_STATIC_LIBRARIES := libscrypt_static
 LOCAL_C_INCLUDES := external/scrypt/lib/crypto