Remove comment in test ReduceSum

unit_tests/operator/Test_ReduceSumImpl.cpp

@@ -186,7 +186,6 @@ TEST_CASE("[cpu/operator] ReduceSum(forward)", "[ReduceSum][CPU]") {
             op->setBackend("cpu");
             myReduceSum->forward();
             op->getOutput(0)->print();
-            // approxEq<float>(*(op->getOutput(0)), *myOutput);
             REQUIRE(approxEq<float>(*(op->getOutput(0)), *myOutput));
         }
         SECTION("noop_with_empty_axes") {