Remove the last occurrences of "using namespace std"

src/test/TestResampler.cpp

@@ -33,9 +33,13 @@
 #include <cmath>
 #include <iostream>
 
-using namespace std;
 using namespace RubberBand;
 
+using std::cerr;
+using std::endl;
+
+using std::vector;
+
 BOOST_AUTO_TEST_SUITE(TestResampler)
 
 #define LEN(a) (int(sizeof(a)/sizeof(a[0])))