display: Remove C++ standard flags

Some headers included by display modules require c++17 now in newer
builds. Remove the forced standard setting to let the build pick
the latest C++ version

Change-Id: I76f9e0c03ce08100c3dd7caf5932eaa941fff0c8
diff --git a/libdrmutils/Android.mk b/libdrmutils/Android.mk
index 97c052b..172233f 100644
--- a/libdrmutils/Android.mk
+++ b/libdrmutils/Android.mk
@@ -8,7 +8,7 @@
                                  $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include
 LOCAL_HEADER_LIBRARIES        := display_headers
 LOCAL_SHARED_LIBRARIES        := libdrm libdl libdisplaydebug
-LOCAL_CFLAGS                  := -DLOG_TAG=\"DRMUTILS\" -Wall -std=c++11 -Werror -fno-operator-names
+LOCAL_CFLAGS                  := -DLOG_TAG=\"DRMUTILS\" -Wall  -Werror -fno-operator-names
 LOCAL_CLANG                   := true
 LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr
 LOCAL_SRC_FILES               := drm_master.cpp drm_res_mgr.cpp drm_lib_loader.cpp