remove testing print from test

alib2algo/test-src/regexp/RegExpOptimizeTest.cpp

@@ -27,7 +27,6 @@ void RegExpOptimizeTest::testOptimize() {
 		regexp::RegExpOptimize opt;
 		regexp::UnboundedRegExp res = opt.optimize(regexp);
-		std::cout << res << std::endl;
 	}
 	{
 		std::string input = "a+a* (b+a)* c";