openbmc_dbus_rest_test: fix headers

The "include/" directory is already in the search path specified by -I,
so remove the prefix from the header.

Use <> for dependency headers and "" for bmcweb headers.

Reference: https://gcc.gnu.org/onlinedocs/cpp/Search-Path.html

Tested: unit test passes.

Signed-off-by: Nan Zhou <nanzhoumails@gmail.com>
Change-Id: Id0d95d927bb390dba311d9e4f4da3eef4e566ed7
diff --git a/include/ut/openbmc_dbus_rest_test.cpp b/include/ut/openbmc_dbus_rest_test.cpp
index ea99a1b..7efd10d 100644
--- a/include/ut/openbmc_dbus_rest_test.cpp
+++ b/include/ut/openbmc_dbus_rest_test.cpp
@@ -1,7 +1,7 @@
-#include "include/openbmc_dbus_rest.hpp"
+#include "openbmc_dbus_rest.hpp"
 
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
 
 namespace crow::openbmc_mapper
 {