Remove dead code for generated code coverage.

src/full-codegen/s390/full-codegen-s390.cc

Index: src/full-codegen/s390/full-codegen-s390.cc
diff --git a/src/full-codegen/s390/full-codegen-s390.cc b/src/full-codegen/s390/full-codegen-s390.cc
index 921bc9a77e5456aa8cbe366999d70fa0b2684df8..8b3e2bbfe961ba39d1c43b092d55afef5dc8444a 100644
--- a/src/full-codegen/s390/full-codegen-s390.cc
+++ b/src/full-codegen/s390/full-codegen-s390.cc
@@ -446,8 +446,6 @@ void FullCodeGenerator::EmitReturnSequence() {
     // Make sure that the constant pool is not emitted inside of the return
     // sequence.
     {
-      // Here we use masm_-> instead of the __ macro to avoid the code coverage
-      // tool from instrumenting as we rely on the code size here.
       int32_t arg_count = info_->scope()->num_parameters() + 1;
       int32_t sp_delta = arg_count * kPointerSize;
       SetReturnPosition(literal());