remove extra unit test print [skip ci]

test/unit/run.cpp

@@ -12,8 +12,6 @@
 int main (int argc, char* const argv[])
 {
     int result = Catch::Session().run( argc, argv );
-    if (!result) printf("\x1b[1;32m ✓ \x1b[0m\n");
-
     // only call this once, on exit
     // to make sure valgrind output is clean
     // http://xmlsoft.org/xmlmem.html