Fix cppcheck warnings

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I18be21d5141630a1da3d5e54740b54a9a06496d9
diff --git a/src/main.cpp b/src/main.cpp
index 624c9e7..5288635 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -26,7 +26,7 @@
 using namespace phosphor::logging;
 nlohmann::json gpioDefs;
 
-int main(int argc, char* argv[])
+int main(void)
 {
     int ret = 0;