poorly written test fixed

tests/pair_test.cpp

@@ -17,7 +17,6 @@ struct pair_test : public test_scaffold {
 	virtual int run() {
 		
 		cheap_rand setter(seed);
-		cheap_rand getter(seed);
 
 		gp::pair<double, std::string> v{0, "zero"};
 		bool result = true;
@@ -25,9 +24,8 @@ struct pair_test : public test_scaffold {
 		for(int i = 0 ; i < 100; i++)
 		{
 			auto a = setter();
-			auto b = setter();
 			v = gp::pair(a, std::to_string(a));
-			result = gp::pair<double, std::string>(b, std::to_string(b)) == v ? result : false;
+			result = gp::pair<double, std::string>(a, std::to_string(a)) == v ? result : false;
 		}
 
 		return !result;