clang-format: update to latest from docs repo

Since `Cpp11` is an alias for `Latest` and we should tend towards using the
latest C++ standard, update the C++ standard to Latest.

https://github.com/llvm/llvm-project/commit/e5032567903de19962333c4bf7d2edceaf4f9824#diff-b49a097415dff2837d9626d422c58ba8R82
https://github.com/openbmc/docs/blob/master/style/cpp/.clang-format

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Id5684236b64867ba631a3a00dadababe2c36db16
diff --git a/test/physical.cpp b/test/physical.cpp
index f05d882..10dc9b7 100644
--- a/test/physical.cpp
+++ b/test/physical.cpp
@@ -46,8 +46,7 @@
   public:
     /* Use a no-args ctor here to avoid headaches with {Nice,Strict}Mock */
     MockLed() : SysfsLed(create_sandbox())
-    {
-    }
+    {}
 
     virtual ~MockLed()
     {