Fix tests build issue with latest Catch2

Author: Blake-Madden

tests/testingmain.cpp

@@ -1,14 +1,9 @@
 #include "../tinyexpr.h"
 #include <catch2/catch_session.hpp>
 #include <catch2/catch_test_macros.hpp>
-#include <cstdlib>
-#include <iostream>
-#include <string>
 
 int main(int argc, char** argv)
     {
-    std::cout << te_parser::info();
-
     Catch::Session session;
 
     session.applyCommandLine(argc, argv);