[Runtime] Only print IO stats if emper::IO is true

emper/Runtime.cpp

@@ -165,7 +165,10 @@ Runtime::~Runtime() {
 	// objects bound to the runtime's lifetime
 	if constexpr (emper::STATS) {
 		printLastRuntimeStats();
-		emper::io::Stats::printStats(globalIo, ioContexts);
+
+		if constexpr (emper::IO) {
+			emper::io::Stats::printStats(globalIo, ioContexts);
+		}
 	}
 
 	for (unsigned int i = 0; i < workerCount; ++i) {