Use the global default cpp_std.

Bug: http://b/344590580
Change-Id: Ibbaae662a798ae2919ccb5f0845f6b8956cf5b1d
diff --git a/camera/ndk/Android.bp b/camera/ndk/Android.bp
index d4dd546..921aab2 100644
--- a/camera/ndk/Android.bp
+++ b/camera/ndk/Android.bp
@@ -111,7 +111,6 @@
 
 cc_library_shared {
     name: "libcamera2ndk_vendor",
-    cpp_std: "gnu++17",
     vendor: true,
     srcs: [
         "ndk_vendor/impl/ACameraDevice.cpp",