make startup message normal output instead of debug message

src/main.cpp

@@ -158,7 +158,7 @@ int main (int argc, char **argv) {
         exit(1);
     }
 
-    DEBUG_PRINT("Starting actsim agent with " + std::to_string(jobs) + " worker threads.");
+    std::cout << "Starting actsim agent with " << std::to_string(jobs) << " worker threads." << std::endl;
 
     return start_agent(db_cred, jobs);