Remove unused parameters from test code.

test/exclusion/hello.c

Index: test/exclusion/hello.c
diff --git a/test/exclusion/hello.c b/test/exclusion/hello.c
index 30e8d5416dc01a8ef9434a550270491bfc13e5b1..1846cbb9f371934764f8f17820685540ffb5f0a9 100644
--- a/test/exclusion/hello.c
+++ b/test/exclusion/hello.c
@@ -8,7 +8,7 @@ int func1(void) {
   return 42;
 }
 
-int main(int argc, char *argv[]) {
+int main() {
   printf("Hello, world!\n");
   printf("%d\n", func1());
   return 0;